Originally Posted by tinyliny
you can always use a sidepull for a while to see if the lack of a bit makes her more relaxed.
Also, when you do put a feel on the rein , to ask for a lateral flexion, don't release just because she throws her head. Keep the pressure on and wait until she gives you a little of what you are asking for. If your reward with a release when you see her getting upset and flinging her head, you are essentially training her to do that. Keep in there until she makes a different choice and reward THAT!
Thanks so much for the help! She has gotten worse as far as putting the bit in her mouth (lots of head throwing) but under saddle she has been a lot better. I have tried using a sidepull but her issue with that was she wouldnt really listen to it. I've found that the more routine I do (i.e. Spending every day practicing transitions, stops, backing) the worse she is. She gets bored very easily. But I will practice more lateral flexion with her and see how she does. :)