S.R.
Proud Momma,
You're in our prayers, I hope everything goes well with your son.
Like other posters have said, if he doesn't know yet the car has been repossessed, then he @ least know it will be soon. I deal with repos in my work (hvac units, who would've thought you can repo those??) Anyway, what I suggest (and the only thing I can think up you can do), is call the financing company and try to rework the loan, even though you're not on the loan, as the spouse, they might help you. (It depends on the type of loan, and the financing company). Not because of the car, but because of your credit, a good credit know a days can be worth millions!!.
If you can't afford the reworked rate then, you'll have to let it go, but I suggest you do that as a last resort, because it can seriously hurt your credit.
I can't imagine how hard your situation is, we are all struggling as it is. Please keep your faith, its the only thing that'll get you through. Good Luck!