With my character her abilities have always been a part of her as far back as she can remember, so having given up those powers was a severe sacrifice for her. (Although she didn't actually expect to survive, so just living with the knowledge of what she lost and that it was her own doing is hard for her, never mind that her body has apparently been largely rebuilt by the fairies in order to save her life and she is learning a lot of ways where it is not the same at all, which is identity crisis enough.)
When she started developing new powers, it was not my idea to compensate her, but to distress her further, because she doesn't know where they came from and whether she is becoming something dark and terrible. Although, naturally, as the story has developed these powers have proved useful. (Which doesn't exactly answer her doubts. It just tempts her to use them.) At a later point in the story, as yet unwritten but planned, she does have a chance to get many of her original powers back, but the situation will be so tragic I don't know if she will or if she should accept.
So I have plenty of time before I reach that point in the story, and I will think over everything that has been said here, and see how much of it applies to her situation (I suspect that quite a bit will).