^That might explain some of her character, but that doesn't justify everything she's done and continues to do. The other band members are generally in the same boat, the whole theme of them being "lost together", and yet the band treats her better than she treats them by a huge mile.
I'm not sure if I ship these two in that way but their dynamic in the anime thus far has just been... mesmerizing for some reason. I really don't know why.