Sometimes I wonder why I bother.....

OK, so I don't set myself up as some kind of horse fixer. All I try to do is help people, when they ask me, to have a better time with their horses. Usually that means I try to get them to be more confident around them. Sometimes I lend them one of mine (if they ask me to) to ride to be able to do so.
Having agreed to do that a few weeks ago, I have had to go and get my horse home this week because the loanee decided I was "using" her for free livery BUT at the same time,  just for good measure, she claimed that he would be better off staying with her as I have apparently been systematically overworking my poor horse.  As if that weren't enough,  she has described me as a "bully" of both horses and humans to a mutual friend. I have no idea why this has all kicked off, but one thing's for sure, I will think long and hard about helping anyone else I am not 100% sure of in the future......