As a child of over protective parents, I think the best you can do to your daughter is to let her venture her ways, while letting her know that you will be there for her if she ever needs any help or guidance. What makes my father happy doesn't make me happy. Happiness is subjective, and if we want anyone to be happy, then we need to let him/her be happy by their own means of happiness, and be supportive of that, as long as it is legit.