First of all, thanks to everyone for the helpful advice. I am going to talk to my vet and see what he thinks about her behavior and if there is anything I need to do for her. No, EquineLover, I haven't had much time to ride her due to the weather. It has been so cold. Can you exercise (lunge) a horse when it's only in the 20s to low 30s? Hopefully, this week, we will be able to ride more. The weather is suppose to be unseasonably warm.