From all your posts I feel we are on a similar path. We are both dealing with a severely depressed spouse. Is your wife on Anti Depressants? If she is have you looked up online the relationship between ADs and falling out of love? AnotherStander, who also posts to these forums has written as well about this and has a lot of insight as well. I would look up his posts and read through them.
I think the problem we both have as men is that we have known for a long time about our spouses illness and have tried to protect them like any husband would. It is very hard for us to step back and stop doing what we have done for so long.
I am dealing with many of the same behaviors as you are. Right now my wife can't handle any in person or verbal interactions with me. She is trying to distance herself from what she tried. She is laying blame all around for her actions. The kids see things and know their mother is not all right. They are not rushing to move back in with her. Eventually she may face her demons.
The best advice is to get knowledge. Learn as much as you can about depression. Learn as much as you can on the long term affects of ADs. There is a lot that the medical community dismisses. Unfortunately there is so much evidence that goes counter to what the medical community says. Knowledge will give you the strength to step back and have a clearer understanding of how she is acting and allow you to make good informed decisions for you and your daughter.
Twisting on Life's Rope Me53 W53 M20 D21 D19 D16 BD 2-2013 D final 1-2015 _________________________ "Dream about tomorrow, Live for today, Learn from yesterday"