Sky, I'm not sure making friends with her is an option. That's because one minute she's friendly and apologetic for her behaviour and the next she mean and abusive. I know this because about a year ago she hugged me and apologized to me for her actions and then a few days later she started up again with her outrageous behaviour.
And a restraining order they cost money as you said. And that I don't have. I guess the best thing I can do is to try to avoid her and like you say not take it personally when she goes off.