Haflinger jumps 3’6“ from a standstill

13hh 13yr old Haflinger jumps 3’6“ from a standstill. She is extremely overweight and out of shape. I have owned her for about 3 weeks now, she has only ever been a broodmare and I am just starting her saddle training now, which is going well :) She wanted to be with the original horses I put her with when she arrived and not the group of ponies that I moved her with. My boarder told me she jumped the fence and I didn`t really believe it, so I moved her again, an hour later she was back in the original pen,