It's nice you've asked her input, but move her anyway.

FWIW, we moved DS from a lovely school to a slightly rougher one when we moved house. I really didn't like my 5yo saying "oh my god, that's so cool" or hitting. I mean, yes, he sometimes hits, it's rare but it has been known to happen, but not vindictivly. Until now (has now stopped). It took him a little while to get settled and, despite being bullied, didn't want to go. He had just made a friend.

So we had a week of him being upset and unsettled when we did move schools (a place was suddenly made available locally). He is now happy in his new school, settling in and enjoying it a lot more without 5yo bullies. The thing that made DS feel better about moving is that he made friends with a little boy also at the school, the year above him, and I told DS they could see each other at playtime. But I don't know what I'd have done without his friend already being there! Can you take your DD to the Catholic Church, if they have a Sunday School, so she can meet potential classmates and have a friend before she starts?