Okay, this whole thing just infuriates me to no end. You agreed to trade for a horse that you'd never seen. You didn't have a PPE done. You didn't even look at the horse before taking possession of it. Now, you're having a snit fit and trying to demand they give you back the other horse because
you couldn't be bothered to check out the mare before agreeing to the trade.
And, to top it all off, you are threatening to put the horse down because of "A" sarcoid on her neck. "A" sarcoid will not be life threatening. "A" sarcoid is essentially nothing more than a blemish which, by the way, can be treated! They are NOT contagious.
I feel very sorry for the mare and the poor person who entered into this trade with you. You went into the exchange without doing the proper diligence and now you're blaming the other person for your
own lack of responsibility. Not only that, but you are willing to put down a perfectly good horse for no other reason than spite, it seems to me.
What kind of person are you?