OMG!

What a sudden and heavy load for you to deal with!  Take it one step at a time, and you'll get through it, but make sure you get the rest you need.  Take Zzz-Quil if you have to but look after yourself.  Pace things the best that you can.  Your  role is to be there for Jim, as things progress.  Not easy, but you will get through it.  I'll be thinking of you over the next week.  Please, phone if you just need to talk.