I don't know what to say... my DS is somewhat like that in he will do for anyone, but I have to practically beg for some simple things... and he always "forgets" what he promises to do...for me..... It is very discouraging and I do not have the health problems.
Except for "Mister" what is really holding you there to the isolation of the ranch? Maybe it is time to really assess your situation and what the next years look like. Fen has become his dog, and he does not want to be your service dog, Boone has become one of a kind for you.
Maybe you need to think about yourself at this point. There has got to be a better situation for you to consider being in.
I would not worry about having any other animals since you often cannot take care of them with the RA and such. Then the money for the feed will not be spent and it can go to the groceries. When you do not have the eggs, or the meat, then he can go without.
This is supposed to be a partnership... you have been married long enough, and it is time he lives up to his part of the sickness and in health....if not, then you have to do what is better for YOU...
I also would consider seeing if Cody and the girls would be interested in the saddles, tack and other stuff that you have there. The sad thing is, you are never going to be able to do what you once did... The RA has totally changed your life... finding a home for the things that you can still salvage is something you need to consider and gain back a little monetary compensation. The trailer, too. It is "going to pot" sitting... had one once that did not get used and it deteriorated terrible fast.
It hurts to let go of things, but you have acknowledged you will never have what you once had...or can be what you were.... that is the first step... find your place in the "here and now"...
I am contemplating some changes here due to the situation with DS... not what I wanted, but might be the best thing for my peace of mind too.... and again, I do not have the limitations you have.
I'm sorry Randy is letting you down so badly. I would consider what do you NEED from your current location? What can't be moved?
-It seems obvious to me Mister the horse and Boone.
-You have a decent doctor network in the town 4hrs away.
Is there anywhere close to town or your kids where Mister could be boarded at a reasonable rate? It seems like keeping him safe is biggest sticking point to staying at the ranch.