I didn't see any mistakes. If you haven't expressed those things before then it's okay to express them...once. You said your piece, she heard you, she didn't say "I want it to work out too", so now proceed as though the divorce is inevitable (which it isn't). There is nothing wrong with saying you are asking for child support...of course you are. I don't know about your state, but every state I've lived in child support is pretty much a given (as it should be unless each parent is caring for the kids 50% of the time and providing equally).
You cannot be lonely if you like the person you're alone with. Dr. Wayne Dyer
