hi. I have worked with miniature horses for most of my life. But I just bought my first miniature horse named Sox in August of 2019. She was great for the first month and a half. She was driving and giving me no issues. About a month and a half after I got her she started to kick me when I put on her harness and run away when I go to put her halter on. So I moved her to a different barn with less activities going on. And she's starting to do the same thing. I had the vet come out. Which led me to put her on guastroguard and the vet discovered that she's got a weak left stifle. I don't know what to do with her to help her?? Any ideas?? Anything that might help??