If this woman is so bad why has no one reported her to animal welfare?
If you (OP) and the people who say they have witnessed these things havent reported her then surely that makes you all complicit in this?
This is a Horse Forum - there's nothing we can do to make this go away, sympathy helps no one and it wont help these horses if they really are being abused.
If you really have evidence then report her and maybe she can be prevented from buying/owning more horses
As for having horses euthanised - then I would always have mine put down at home, there simply arent enough homes for unwanted unsound, elderly horses right now. I totally despise people who stick them in sales and walk away convincing themselves that they have found a wonderful happy home - the reality is they are usually being loaded up and on their way to a slaughter yard
I don't own a horse any more so i'm not boarding at the stables anymore. I don't work there anymore and my only connection is my friend who still works there. I'm trying to move out of this area and when I do all ties will be cut and I can go live happily ever after shoveling horse poop in my own barn
That part I actually miss about working at the barn and of course the horses!