WOW... there is so much good stuff in everyone's responses!
I will say that in similar circumstances, 15 years ago - I would have been Little Ms. White Knight, taking time off work to go rescue them from their problems and try to intervene with the kids and getting right into the middle of it all. But I am NO match for their craziness and once I get into the middle of it, that's when all hell really breaks loose and it's all my fault and etc.
Yes, Iphi - I would drive 5-6 hours to go manage these self-made crises. Now they're 14 hours away; I'm 10-20 years older and don't like driving that much anymore... here's my favorite story; happened before therapy, before regaining my memories about what happened, before starting to reclaim my whole self...
I was married to Ex-NH #2 for 10 years; together for about 14. The program that I taught at a local school - and worked so hard to build & get certified as a degree was killed by the school admins 6 months after gaining the approval for the degree. Kids all grown; living elsewhere - and hubby was isolating me - had determined that I was "living dead" in that relationship... and was going to leave him. (Hubby #3 in the wings - got lucky with this one.) So, I'm moving out... loading the very last items... when the phone rings; it's my brother saying my mom's had a heart attack and is in the hospital - and will I be there tonight???!
It was so typical. I explained what I was in the middle of... and that I needed a few days to get my apartment settled. Hubby #3 had a hard time understanding this... but I finally got him to understand that I needed to take care of ME for a few days before traipsing off cross-country and dealing with my mother's insanity... (all this BEFORE I had a clue about "what was wrong with me"...) so somehow I instinctively (rbrain?) knew I had to protect myself from her, my brother's dependency, etc.
Lollie: yes, I did the artist's way in conjunction with my first phase of therapy... there is no question about who is who "safe" and who I need to protect myself from anymore... the hard part is learning how to BE safe with other people!

Not always protecting... but I'm learning.
Lighter - this experience is another gift from the universe, in that it's helping to push me along... unpleasant at first, yes; but I'm pulling some very valuable things for taking a few more steps along the healing path from it. I'm better than OK, I feel pretty good today... but how are YOU?