I know that she is not my problem, but I want to make sure that she is ok - after all, if she's ok, she's able to look after our Son.
RBG80,
I'm in a similar situation. There are two issues that make the situation hard for me. One is that my sons don't particularly want to be around my XW; that really concerns me. The other issue is that watching my XW flail around is similar to watching someone who's drowning (although I've never watched anyone drown). All of your instincts tell you that you need to go to the rescue in some fashion.
My XW has been suicidal in the past (due to childhood sexual abuse). I don't know if she's suicidal now, but I really hope she gets some help because I don't want things to spiral down that far.