We want YOU to lead. Pick the place and the time, let her know. Let her stand up and object if she doesn't like something. Otherwise, she'll love that you're in charge and confident in your decisions.
This is a very good one for me to think about. It always seemed like the right thing to do to say 'hey, no pressure, you get to pick whatever you want' but really, that is putting on a lot of pressure. Of course, there's a fine line I need to walk between being confident and being controlling about these things. I guess a lot of that comes into the "let her stand up and object" part of it.