Sorry to disagree here, but your friend's interpretation of your dream is outright wrong.
When we dream, everything in the dream has to do with ourselves. In this dream, your daughter, someone you love very much, is actually yourself.
I'd say these dreams are about you and your self-doubts. You are afraid to stand-up for yourself for you think that if you do, your world will shatter.
This is actually very, very good news in my book. Your fears are bubbling to the surface, where before you could not even acknowledge them. Understand that emotions are emotions, that is all that they are. You don't have to be afraid of your emotions. You control them, they don't control you.
At least now you can hold and touch your fear. So do. Get intimately familiar with it. Mull it over in your mind. Examine it. The more you are willing to do this, the less power the fear will hold over you. Cause really, you don't fear for your daughter or your wife... what keeps you in gridlock are these horrendous feelings you have... ignoring your fears keeps you from solving your problems.
I'm not dumping on you. We all do this. You cannot change what you do not acknowledge. Through your dreams, however, you are beginning to face yourself. And once you are okay with that, then you can stand up for yourself and get these marriage problems solved.
Good going, guy. I think you have ample reasons to smile, even if it might not feel like it. Major, major steps for the dog.