Dday, I agree that NC is important. OM should not be driving your W to work. Taxi, bus, sometimes friends, I assume you could help her out sometime? Can she also get a license (think you said she didn't have one), and start driving also?
I think the WAS don't realize the kind of pain and stress we go through at the time; they're in la-la land themselves. Hopefully, some of that will become obvious, and you should just be honest with her, she shouldn't expect you or your M to be fully recovered in a month or 2 and I would hope will realize that.
