Since the spring, I have been working with a six-year old Arabian mare. She has been making wonderful progress until a month or so ago when I fell off of her. When I attempted to get back on she refused to stand still, even when I had someone hold her, she kept jumping foreward every time I lifted my foot to put it in the stirrup. So now every time I tack her up and try to mount she's all over the place. So I stop trying to get on and lunge her for a few moments and again attempt to mount. We go through this routine and she'll still won't let me on. Any ideas.