is this your friends first horse ?? a couple of years ago a lady asked me for help with her mare , the mare was biting and chasing her out of the field , she was difficult to catch and when you did catch her she wouldnt lead properly , her husband tried and she was only very slightly better , it got to the point where they were very scared of her , as she lives several hours away I suggested that she come and stay with me for a week ..I can honestly say that mare never did a mean thing , she was nervous when touched around her tummy but I found she was full of matts and the skin was sore I clipped it off and she was fine after that , a second horse came with her , she was a bundle of nerves and had no confidence
I never had any problems at all with either horse , it was the owner who wasnt asserting herself as boss , I did help her and give advice on handling and she did improve , I took her and her mares to some shows but she was never confident on her own and didnt want the mares to go back home ...she eventually sold both mares to me , I sold her a gentle gelding and she was so much happier