Some background: I have a 6 year old mare and she is a paint draft cross so she has some stock to her. We've been working for about a year but cantering since about June of 2012 (6 months or so). When I first started her she had only pulled carts she had never been ridden but she took to it well and learned relatively quick. But my main question is as follows.
When I canter and trot her she tends to fall to the inside around turns reall bad and she doesn't want to stay on the rail at times (particularly down the long side of the ring). When she's trotting I can keep her on the rail for the most part but she turns her head to the outside a little because I have a steady contact on the outside rein and pressure on the inside leg or else she won't stay out. At the canter she does the same thing but there are times where it is impossible to keep her out. She will turn her head really far to the outside and ignore the leg aid and just fall in. She does this much more so tracking to the right then to the left.
I've tried using my inside leg but she doesn't respond we'll to leg aids at anything more than a walk. I can bend her and move her out and she will listen well at the walk but the second we pick up the trot she starts resisting. I use my inside thigh and calf, I hold contact on the outside rein iv tried lifting my inside hand slightly or weighting my inside seat bone. Iv also tried giving the outside rein so she can't turn her head on and lean on it but then she will run in off the rail. Iv circled her when she turns her head out and tried to bend her a little but she doesn't respond to most of it.
My trainer said that the reason she doesn't stay out and turns her head is because she leans on the right shoulder and she is extremely short with her front left. It all makes sense to me and I understand why she does it I just don't know how to fix it. I'm open to any suggestions
She's such a sweet girl and I really want to get her to use herself correctly she truley has a nice attitude.