Glad you didn't get hurt worse. I'd consider hiring a professional trainer for a month or two to help you deal with her issues. Consistency and firmess will go a long way. I hope you guys are able to figure out what to do about her problems and I really hope nobody gets hurt again. Horses definintely are dangerous if they have that kind of mind.

I know you are probably upset by all that has happened, you wanted a companion and friend and instead got an horse with mental/physical issues. But I bet you have sure learned a lot about buying a horse for the next time around and I hope it works out better in the future. Always have the owner ride it first, then try it yourself. Always do all the things you'd want to do at home like saddling, bridling, picking out hooves, bathing, grooming, loading in a trailer, etc., before you ever buy. And have a vet check done as well before handing over your hard earned cash. Sounds like you got her fro a horse broker and that's too bad =( I feel bad for you that it turned out like that but I hope she comes around and things go better for you.