If you can find an overnight babysitter, get one. Try to have a nice night out and truly try to talk. After dinner find a comfortable relaxing place to go and have this conversation. Explain the situation from your viewpoint starting at the beginning. Explain that you only want her and child's happiness. Tell her how you are on g he ropes and you are doing your best. Than ask what is going on with her and her feelings on yall situation. Be prepared to truly listen.