It depends on whether you feel that your goal during the visit is to
> have a pleasant visit or is it to change her dietary habits *this
> summer.* I doubt you're going to have it both ways in such a short
> period. I'd go with having a nice visit and strengthening your
> relationship. I've been having nieces and nephews visit for many
> years and my philosophy has been "When you visit your aunt, it's
> playtime!" I also chose my battles carefully, as far as "It's my
> house and you do things my way (or eat what I eat)." You don't know
> how it kills me to buy them sugary cereal, but I do. My only
> requirement is that they take leftovers with them :>

Another example of letting children run the show. Not at our house. "This is
what's for supper. Take it or leave it." I can quite assure you that we're
not having tripe and liver for dinner, either.