Help

right people who know everything, that's you lot reading this :-)

My soon to not be Mother in Law has had my kids for a couple of hours, they go to their dads after school on a Wednesday but he doesn't get in until 530 so really they spend most of the time with her. She told me they were going to bake which the kids love so that all sounded good

But

Shorty came home talking about baking a cake without butter or margarine because it was a diet cake and everyone needed to lose weight after Christmas. Granny had been telling her about her new weightwatchers cook book and all the low fat recipes shes going to try out when they're there because they've all eaten too much chocolate over Christmas. Daddy dropped them off here and joined in the conversation about them all being on a diet in there house and needing to lose weight.

Shorty is 5 perfectly proportioned and completely healthy she doesn't need to diet but I also think that she doesn't need to be told all about them.

I'm cross that he's gone against something I thought we agreed on but I don't know if I'm unreasonably cross so here's the question

Would you discuss the need to diet and lose weight with a five year old?