I don't think she hates you. I think maybe she didn't know what to do.

Coming from my own perspective if someone were to say they loved me and I did not return the sentiment I would be very uncomfortable around them after. Especially if it hadn't entered my mind that they could feel that way about me.

I would find myself monitoring everything I said and did trying to make sure I wasn't leading them on or sending mixed signals.

I would probably avoid them to save myself the effort and them the pain of having to deal with my distance.