A passenger in a disabled plane must put on his oxygen mask to save himself before he can attempt to help others, so let's talk about fixing you first.
Fifty mcgs is the lowest therapeutic dose of levoT. It's very rarely enough for an adult male. Your TSH of 2.5 is showing that it's probably not enough for you, either. It's better to dose according to the free levels of T4 and T3, but we can tell by TSH that high that your dose is too low. Until you can see the endo [which is no guarantee of optimal treatment, I'll warn you], ask the NP if you may have a small dose increase to try and get your TSH close to 1. That would be the area where most healthy people's TSH lies, and it's nowhere near the hyperT danger zone for anyone. An increase of 25 mcgs may do you a lot of good.
Get your mental state to a more healthy place. You may then see better what you can do to encourage your wife to get hers there. May I suggest you try to abandon your fatalistic outlook on divorce? The power of negative thinking is probably stronger than is the power of positive thinking.
There's a shortage of endos all over the country, and waiting lists are usually long everywhere. It's not just Montana.
Wishing you the best.
Edit to add:
Looks like Sammy snuck in while I was typing. We often echo each other, and it looks like it's happened again.
I also wanted to suggest you try switching your levoT to a name brand product like Synthroid or Unithroid. Different brands have the capacity to work very differently in various patients, so it's worth a try... But I think an increase is still needed.