I have had her checked out by a vet and a chiropractor and nothing came up, she is a really sweet mare in the paddock, it is only when I try to saddle her up that this behavior is shown. Her saddle has also been professionally fitted.
I haven't ridden her yet as she needs to be re broken but it is just the issues with the cow-kicking and biting.
The only other issue she has is with her hind hooves. She will not allow her hind hooves to be picked out. When you go to pick up her hind legs she will kick out, move and try to pull the leg out of your hand. It is nearly impossible to keep a hold. I have trained her to lift her legs by me tapping her leg with a dressage whip and that has worked great, but she is still yet to let me life her legs.
Any suggestions out there? Sorry for long post by the way :)