Stepping into shark infested waters here,
but if the mare is responsive in the arena and chargy and fearful on the trail,
my first thought is that you are asking too much too soon. Many people
have made good points that it is a training issue, and training involves
discipline and trust. discipline can work, but not well without
trust. If you are working through with trust based training, don't ask her
for more than she can give you. .. go back to baby steps and only ask for
very slightly more than she is comfortable giving. You'll be able to
expand that comfort zone bit by bit, keep progressing with the training and fair
but firm discipline and the trust will continue to grow as well.
