Has your W given you any indication that's she interested in co-parenting the children with you?

It is not uncommon for the MLCer to disconnect not just with the spouse but with their children also.

Trapt gave you some very wise advice. Make the decisions for the children based on what is best for them. It's up to you at this time as it is obvious that your wife isn't even capable of making rational decisions concerning her own life much less your children's.

As hard as this is Radio, you need to leave your wife alone to deal with her own issues. When/if she does this then maybe you will have a chance at saving your M.