Act "as-if" nothing is wrong.....You are a family, albeit a broken one at the moment. In the end though, you are still a family and should do family things together.
Also an outside way of looking at the wedding....You investing in tickets to go is like you investing in the relationship with her. Investing in a relationship builds trust and security....Something she currently lacks in you.
Act "as-if"....buy the tickets and build trust.
Remove your wants for a second and review the big picture....The answer is there for you to see.
