Might be worth working through the missionary lessons and CES letter to see if they can agree at least to disagree.
Your relationship with your family will be healed, and so will you. Do not put up with bad behavior at any stage of a relationship.
It is my opinion I know my husband loves to come home and only eat, sleep and have wild sex. The ideal, in my opinion, is that she discovers what we all know about the lies the church tells her.