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Grey's Anatomy: 10 Things About Penny That Make No Sense - Greysanatomy Fans
Tuesday, August 12, 2025
HomeNewsGrey's Anatomy: 10 Things About Penny That Make No Sense

Grey’s Anatomy: 10 Things About Penny That Make No Sense

ABC’s Grey’s Anatomy has been running for a groundbreaking 17 seasons. Over the years, fans have witnessed a lot of characters come and go through the halls of Grey Sloan Memorial Hospital. While the show is well known for its shocking plot twists and riveting drama, sometimes fans notice things that don’t make a lot of sense.

Penny Blake, played by Samantha Sloyan, was introduced in Season 11 as a surgical resident at Dillard Medical Centre. She was one of the doctors who treated fan-favorite Derek Shepherd when he died in a car accident. Although many fans disliked Penny for her involvement in Derek’s death, she became a recurring character in Season 12. While Penny was a controversial character in the show’s run, not everything about her story made complete sense.

The Head CT

Penny Blake looking at someone

Near the end of Season 11, Derek Shepherd was involved in a car accident. When he was admitted into the Dillard ER he was tended to by Penny and her superior Paul Castello, an Attending Trauma Surgeon. Penny suggested that they run a head CT to check for brain injuries, but Paul overruled her, arguing that Derek’s abdominal injuries were more pressing.

Before they went into surgery, Penny tried again to convince Paul to run a CT scan, but he refused. During the surgery, Derek became unstable and Paul finally remembered that Derek had a head laceration. He paged a Neurosurgeon, but before he arrived Derek passed away. It doesn’t make sense why Paul would refuse to do a CT. This is standard practice for any patient involved in a car accident, especially given Derek had a head laceration. Derek noticed that Paul had little respect for Penny, probably because she’s a woman. Paul may have been sexist and egotistical,  but it doesn’t make sense that he would be this bad of a doctor.

Why Didn’t Penny Leave The Dinner Party?

Callie and Penny at a dinner party

After Derek’s death, Penny starts dating Callie Torres. Callie invited Penny to Meredith Grey’s house for a dinner party, but when they arrive Meredith realizes that she’s met Penny before. The Season 12 episode “Who’s Coming To Dinner” is an iconic episode of Grey’s Anatomy. The tension between Penny and Meredith builds until Meredith reveals to the table that “Perfect Penny killed my husband”.

Meredith and Penny immediately recognized each other because they shared an intense moment after Derek’s death. Penny had apologized to Meredith for failing to save Derek, and Meredith told Penny that Derek’s death will haunt Penny for the rest of her life. Many fans have struggled to see why Penny would stay at the dinner party. It was obvious that Meredith recognized her, and wasn’t happy to see her, so why did she put herself in such an awkward situation when she could have just apologized and left?

Why Did Penny Go To Meredith’s House?

Meredith stands in shock as she sees Penny; Alex is behind her

Penny knew who Meredith was. Both Meredith and Derek were world-renowned doctors, and Penny had met both of them, so she surely must have known the name, Meredith Grey. So when Callie invited her for dinner, why did Penny make the decision to come?

Penny seemed surprised when Meredith opened the door; did Callie not tell her who’s house they were going to? Or did Penny not realize that Callie’s friend Meredith was Meredith Grey? It doesn’t make a lot of sense.

How Did Penny Re-Match at Grey Sloan?

Penny in her scrubs looking serious in Grey's Anatomy

During the dinner party, Miranda Bailey revealed that Penny was going to be joining Grey Sloan. Dillard closed down, so in order for Penny to continue with her residency, the program rematched her with another hospital. This turned out to be Grey Sloan. However, a user on Reddit pointed out that this doesn’t make any sense.

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First of all, in real life, a hospital like Dillard would not be a teaching hospital. Dillard was tiny and in the middle of nowhere, so it would not have the resources to run a residency program. Second, Penny would have had to start her residency all over again in order to be rematched. Finally, Grey Sloan is a highly esteemed teaching hospital so it would be very hard to get accepted.  Dillard was shown to be very poorly run and lacking in resources, so if that was Penny’s first match then she wasn’t a very good candidate. The likelihood of her being accepted into Grey Sloan makes no sense at all.

Did She Know What Grey Sloan Was?

An exterior shot of Seattle Grace Hospital in Grey's Anatomy

Considering that Penny was joining Grey Sloan, one would think that she would have done some research. If Penny had realized that the hospital’s name paid tribute to Derek’s sister-in-law Lexie Grey, then she might have had second thoughts about transferring.

It’s also hard to believe that Penny and Callie didn’t discuss Callie’s connection to Grey Sloan. Callie’s daughter Sofia has the surname Sloan, after her father Mark Sloan. The hospital was named after Mark and Lexie after they died in the plane crash.

Why Did She And Callie Not Discuss This?

Callie and Penny meet in the elevator

A lot of what doesn’t make sense about Penny comes down to her relationship with Callie. If Penny and Callie were dating, it makes sense to think they had discussed their personal lives.

Given the huge impact of the plane crash, Mark’s death, and Arizona losing her leg, it would make sense that Callie had told Penny about her relationship with the “Seattle Grace Five”, including Derek and Meredith. How could they be serious enough that Penny says she took the job at Grey-Sloan because of Callie, but not know anything about the people in Callie’s life?

Why Did Penny get all the Blame?

An angry Meredith with Amelia in the bathrrom

Meredith may be beloved by fans, but the way she treated Penny was pretty harsh. It’s a very extreme thing to say “Perfect Penny killed my husband” to a table full of people. Especially given that everyone there had important relationships with Derek, including his sister Amelia.

When Penny starts working at Grey-Sloan, she’s put under Meredith’s service, but the way Meredith and Amelia treat her is hard to watch. Losing a husband/brother is an awful thing to experience, and there’s no right way to handle grief, but Penny genuinely didn’t do anything wrong. She tried her best to get Derek a CT scan but was overruled by her superior. As doctors, Meredith and Amelia should understand that patients sometimes die during surgery and that Penny of all people shouldn’t be blamed.

Why Was She Put On Merediths Service?

Meredith Grey looking at someone with an antagonistic expression in Grey's Anatomy

Another issue with Penny’s story is that she is put on Meredith’s service on her first day at Grey-Sloan. At the time, Miranda Bailey was the Chief of Surgery and Richard Webber was in charge of the residency program.

Bailey was at the dinner party, and Webber would have been made aware pretty quickly as he and Meredith are extremely close. It doesn’t make any sense that they would put Penny on Meredith’s service on her very first day, as it was bound to cause disruption.

The Custody Battle

Callie And Arizona At Airport In Grey's Anatomy

A major storyline in Season 12 is the custody battle between Callie and her ex-wife Arizona Robbins over their daughter Sofia. Penny won the Preminger Grant requiring her to move to New York. Although Penny didn’t ask Callie to come as she felt it wouldn’t be fair, Callie decided that she was going to move to New York too, and bring Sofia; even if it meant tearing Arizona and Sofia part.

From the very beginning, Penny made it clear that she was happy to emotionally support Callie, but she didn’t want to get involved in the custody battle. However, Callie pressured her to go on the stand, where she stumbled under pressure and forgot some key facts about Sofia. Callie ended up losing custody to Arizona, and when Penny tried to console Callie she was angrily pushed away. A lot of fans have questioned why Penny ended up getting all the blame when all of this was the result of Callie’s selfish decisions.

Break-Up with Callie

Callie and Penny kissing in Grey's Anatomy

One of the biggest question marks in Penny’s story is what happened to her and Callie. After Callie lost the custody battle, Arizona had a change of heart and gave Callie her blessing to go to New York with Sofia. This was Penny and Callie’s last appearances on the show, and fans thought they finally got the happy ending they deserved.

Shockingly, in the Season 14 finale, Arizona announced that she was moving to New York so that Sofia can have both her parents in the same place. She reveals that both she and Callie are single, and making each other smile again, implying that they have reconciled. No information is given as to why Penny and Callie broke up, leaving a lot of Penny fans confused and disheartened. Wherever Perfect Penny is now, hopefully, she’s thriving.

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