I am sorry to hear that!! Is there another trainer around that you could get to come to you?
I was really lucky to find my trainer, she use to show in some really big shows and do very very well. When she came to my barn I had only had my horse for 6 months and I think she felt sorry for me because she said she would train me for free!! LOL So then she got on my boy after a few lessons to see why I was having so much trouble at the posting trot she was like.. Holy Sh,t his trot Sucks!! LOL he has a very long back and he is built down hill, ugh to much for a muscleless green rider to have to try and post such a bouncy trot. So she totally understood what I was dealing with and helped me so much that by the end of the summer I was actually doing small jumps! She had a great way of explaining things and while I was actually riding she would tell me what to fix so I could get the correct feeling of how my seat should be, my hands, my legs, my back and shoulders.
Alot of trainers will tell you what you were doing wrong after you have already ridden around doing what ever exercise they asked you to do.
But in the winter she goes to Arizona so I have to get a new trainer in the winters.
Sorry for the book. Lol
Hang in there, reading and watching real does help alot.