Ya just try that for awhile and just really try to build up your confidence. Because, in my opinion, I think that is the problem. She feels uneasy becuase you are and so once she is nervous she is going to not act right. So try that for awhile and keep us posted, becuase I would really like to find out what happens. The reason I think that these problems are do to uneasiness of both parties, is because like you said, the trainor could ride her and have no problems but when you started to ride, things just kinda went sour. So try that and like I said, KEEP US POSTED!
I love my horse. She is the wind beneath my wings.
John 3:16 (READ THIS PLEASE!)