Quote Originally Posted by ZinniaZ View Post
Bucking could be her way of getting her back in order for the loping. Some green horses haven't figured out their bodies yet and they need to buck to sort of chiropractically adjust themselves for cantering.

Or it could be that she doesn't like people other than your sister telling her what to do!
Huh, I've never heard of that! It would make sense though because she does it every time, but then she's totally fine with loping after that. She deffinitely prefers my sister over anyone else!!!!