Awesomeness by Analysis: Her wish gave her the ability to learn everything there is to know about anything she looks at; she can't understand everything she absorbs all at once, however, so she has to be selective about what she learns to make it useful.
Laser-Guided Amnesia: She used her wish to forget the Awful Truth about Magical Girls and to never learn about it again; this includes forgetting about her old friends. Her mind automatically wipes the related memories whenever they resurface.
Failure Knight: After a girl she was trying to save from a particularly vicious Alpha Bitch commited suicide, she wished she could stop people from hurting others.
Skilled, but Naive: She is one of the two Magical Girls that has the most magical potential, but she is also fairly new to the darker side of the Magical Girl business: case in point, her reaction to the Demon victims in the park.
Break the Cutie: She dove into a contract without too much thought about her Wish or any of the dark details about being a Magical Girl in this universe, then witnesses what happens to people when the Demons sucessfully drive them to suicide.