18 horses? I thought you said it was 10 horses. Personally I think you need to get your stories straight.
As I said before I have personally rescued many horses. I would go to the local auction and try to pick out 1 or 2 horses that I thought would be able to be saved. Quite often I was bidding against the slaughter buyers (back when it was legal) since we knew who they were.
There were some that all they needed were groceries and a bit or (re)training. They all got vet care, dental care, worming, shots and good feed and hay. We would then rehome them. All of this was/is out of my own pocket. We didn't make any money doing this, and usually lost money. But, honestly, some were not able to be saved. Some were too far gone, or head cases (crazy) or just plain mean. (yes, they are out there) Those are the ones I truly feel sorry for, because they need to be put out of their misery, but now, many will just suffer because people can't/won't put them down and the slaughter houses are closed.
We still have a 29 y/o TB that we bought 2 years ago. We knew he was old and waaay too thin, but he didn't seem to be in any pain, so my hubby and I decided that if he was going to go in a month or so, it would be in a loving home, he deserved that much. It's been 2 years now and he brings us joy every day.
The moral of this story? Well, I guess it's to say that many of us are doing what we can, but we can't do it all. Guilt tactics will get you nowhere. (at least with me) It is wrong, and shouldn't be done.