I vote for telling her you miss her. Or that you miss "us". The point about being the only broken family camping is a good one. You can say that it reminded you of the good times you used to have. You do want to try to get her mind to thinking about those good times too. I think with nice, warm feelings, communicating them is a positive. Now I can see restraining the negative ones, but even then, sometimes I think those need to be honestly but non-threateningly communicated too.