splashgirl45
Lurcher lover
A good hacking horse is worth a great deal so I don’t think ending the loan would be a good idea… it might be worth getting a cushings test done as well as you say she isn’t muscling up on her hindquarters and her back looks a little dipped to me . My mares back did the same and I could never get her top line muscled up even with the right work, she was diagnosed when she was 20 but I’m pretty sure she had it much earlier but I didn’t realise