In short no, It's not depression because you can see she really wanted to go to school and be with her friends. She might have developed depression because of her untreated narcolepsy, but I don't see much pointing in that direction.
wanting to do things and be with people doesn't make you not depressed? i'm not trying to be rude or anything, but lots of people have depression and even if they want to do things and talk to people and live their lives they physically don't have the energy.
