That really sucks that you haven't talked to your kids.
Is there another way you could get in touch with them? I hesitate to say call her parents...but they're your kids....and as grandparents they should understand wanting to keep in touch with them. Especially if you explicitly say "I haven't been able to talk to the boys and was wondering if they were around" or some such?
Granted, might piss her off. And/or them. I don't know the personalities well enough to guess. BUT, they're your kids. Just my two cents.
Michelle - Proud DR Rockette S: 28JUL07, D'd: 29OCT09 http://tinyurl.com/27j9qo2
