So apparently a few people I know who I used to help out with a few years ago are auctioning horses. One of them was a filly that was born while I was there. She's probably 2 years old by now, but the people dont know how to train her. They think she has mental problems, since she doesnt listen to them. She'll run into fences trying to escape them, or just not be gentled to let the people touch her. Is there any clear way to tell if there is mentally something wrong with her?