Because, well, I just can't help myself
Here is a completely free piece of "you don't have to pay your lawyers for" advice.
Regardless of who, how and why, a pony in your care, custody and control, died in a very public place and everyone knows. Even if you were/are totally innocent of any wrongdoing, your single biggest mistake, in fact, the mistake you keep making over and over again, is... wait for it........
Opening your mouth and/or posting things in your defence. You see, dear, it would be different if you understood the position of the others, or if you had a very good, really convincing, concise argument.
You don't. Every thing you utter, be it verbally or worse, on the internet in print for posterity, makes you look like a guilty fool at the least of it, boarderline crazy and paranoid most of the time.
What everyone is trying to tell you, and no one is getting through is the following.
#1. You did a bad thing. Whether you think so or not 99% of people made up their minds of that the second that pony hit the ground. No matter what you say, do, or sue, you cannot EVER change that perception. There are still people who think AT was responsible for Le S's death, God rest her soul. And she was about a million times better horseman than you could ever hope to be. You cannot fix it. Ever.
#2 Everyone thinks your daughter is a damn talented kid in spite of you. There is one very important thing every teen or pre teen daughter wants from her mother. It's for her mother to not embarrass her in public and ruin her life.
The best thing you could do for her, really, is stay very very quietly out of the spotlight. Make sure she has a couple of nice ponies to ride and a couple of friends whose parents aren't scared to hang out with you, try not to overshow the buggers because, you care about the year end stuff, if she's honest, she doesn't so much, she just loves her ponies.
For the next few years (or decades) give every horse/pony in your care the following things, only:
If you do the above, keep your nose clean and your mouth shut, you will be successful.
Perhaps by the time your grandchildren are ready for their ponies, if you are quiet and well behaved, we'll all be old and no one will care.