After seeing a good amount of tags and confusion I wanna tell everyone about Nagisa Momoe. Obviously Rebellion spoilers below.
Yes, she is Charlotte.
But in Rebellion she comes back to help Madoka. When she comes back she takes the form Mami named “Bebe”. “She was expressionless and silent when she was first encountered, but took on its current appearance out of the blue. A bit loud. Mami made its clothes by hand” To blend in she plays the role of team pet and loyal companion to Mami.
She ends up telling Mami later that she came with Madoka and Sayaka to help save Homura. We find out later from Sayaka they came to keep Madoka’s memories and powers safe and since there was two of them if one died they would have a back up. So her and Sayaka end up acting as Madoka’s angels if you will.
Remember, in Madoka’s new world as the Law of Cycles she never killed Mami in this timeline. She was absorbed into the Law of Cycles like everyone else. The only one who this didn’t apply to was Sayaka it seems who retains all memories of all timelines. Nagisa does seem to have retained some memory of the timelines considering “Mami resembles someone who appeared in the final nightmare the witch saw.” So, she did kill Mami in at least one timeline, but neither know that.
About her wish:
It would seem judging by the amount of medical things in her labyrinth in the show, the fact her grief seed was found at the hospital, as well as production notes that her mother was very sick and her wish was for her mother.
As per her wish she revived “one single cheesecake” (which I am guessing was her mothers favorite food). In the design for her labyrinth it says “It’s really a delicious cheese cake. My dying mother wanted to eat it, but maybe I should have cured her disease instead. However, that surely wasn’t appropriate.”
- She is estimated to be about 10
- Her she has two kinds of minions: Pyotr that look a bit like mice that are to locate cheese. And Polina who “nurse” the cheese.
- She states the reason for coming and helping save Homura was to eat cheese again.
- Her soul gem is shaped like a piece of candy
- Her weapon is a bubble trumpet
In Homura’s new reality she is alive again, so there is likely to be more of her and the ending has her and Mami meeting so it is likely they will become friends.
Please don’t hate her because she is Charlotte. All magical girls used to become witches and what they do as witches is beyond their control. She is just a little girl who wanted to do something for her mother without knowing it would cost her life.