Our marriage has been over for a long while...we were only here for her..
Please use her comments as an opening to talk to her about her thoughts and feelings regarding her family life. Ask her open-ended questions ("What are you worried about the most when it comes to our family?) and do a lot more listening than talking. She deserves the best chance at a happier home life and so do the both of you. Isn't it time you sought professional therapy to address what's best for all of you? Maybe you needed these brave, thoughtful words of your daughter to do what's been needed for some time.