Unfortunately she tests riders and will plant herself and refuse to move unless they’re firm enough, she’s never dangerous she will just reverse and kick out of smacked with a whip.
Once she gets going and knows she can’t get away with it she won’t do it again and rides like a dream.
She had her back injected in February, it was nothing too serious but it was enough to make her feel a little uncomfortable, her back hocks have arthritis but after her back was done I didn’t feel it was necessary to inject them.