I personally had a good experience with her and I've found that some things were really on point regarding past and present but her final predictions were 50-50 accuracy-wise.
I get though why some people don't like her, if she doesn't really connect with you or if for whatever reason she doesn't like you, she will get nasty or defensive. I recommended her to a friend and she had a totally negative experience contrary to mine.
In my case she even offered me a free re-read once I told her kindly predictions didn't fully come to pass so can't really complain. But I am aware that if you are unfortunate to catch her on a bad mood or if she doesn't like your energy, she won't be nice.