My friend rode her today (I warned her but she still wanted to ride) and she fell off twice (and she's a better rider than me). Both times she fell was at a gallop. It's like once we let her get up to the trot she just shoots. She was a barrel horse before so that's probably what it's from. A lady that was at the stable just said that we should keep her going in a small circle at a walk or trot and practice stopping. She's really bad at stopping.
Before I got her she was only ridden on the weekend so she hasn't really had that much riding time in. And the only time she got to go out of her stall was when she's used to ride. So she's cooped up in her stall (at least) 5 days a week and not getting any exercise. (Not anymore though cause I got her.)
I also didn't lunge her either days. I tried but I didn't have a whip to get her going so I'll go buy one tomorrow. They don't have a round pen either only an arena.
Right now I'm at a loss and really discouraged . So any advice would be real nice. Is she doing this cause she's challenging me? Or why do you think? What would you do?