My lovely future stepdaughter, 13 years old, is not sure she wants to attend her dad's and my wedding. We get along great; there are no problems with our relationship. What she does fear is her mother. Her mother has mental health issues and is in denial about her ex-husband's new life. They have been divorced for over five years, but cannot accept that her ex is happy with someone else. My stepdaughter says that her mother will become even more depressed if she attends the wedding. I strongly believe that my FI needs to have a talk with his ex regarding their daughter. So not fair for my girl to deal with this...