There's really just a couple options:
Bipolar's need their meds, and if your wife isn't willing to take her meds on her own, there is sadly nothing you can do. If she is an immediate danger to herself or others, you can call 911. Other than that, counsel and support her into seeing her doc (which I've seen from your posts isn't really an option) and taking her meds (ditto). You can't have someone "committed." Only an emergency doctor can do that.
If you're worried about your son, go through the proper legal channels to make sure he's seeing his doc and getting his meds. That's about it.
I'm sorry. You must be very worried. Stay strong.
Co-Moderator, Bipolar Forum
It is a melancholy of mine own, compounded of many simples, extracted from many objects, and indeed the sundry contemplation of my travels, in which my often rumination wraps me in a most humorous sadness. -- William Shakespeare