Grand daughter’s size

I cannot find anything unreasonable in Springychicken’s post and I did not understand what BradfordLass meant to convey in her post. Do you mean that if society accepted overweight as normal then we wouldn’t have a weight problem?
How much, when and what kind of food we eat is down to habits. Habits established during childhood stay with us. My mother always put small portions on our plates and encouraged seconds but never forced it. I wonder how much is down to habits rather than genetics in obese families. I would think a large mother eats larger portions and snacks in between meals but also fills her children’s plates to the brim and provides them with good desserts and snacks. Children watch and learn all the time.

Grapes are loaded with sugar and a poor choice for snacking

Fruit does contain fructose but the benefits of eating fruit, particularly for children, far out-weigh any sugar content. This is just one of the latest 'food fads' and personally, I think one to be ignored.
Far better for a child to eat fruit than sweets, cakes, crisps etc.

The problem with snacking on fruit (rather than eating as part of a meal) is that it raises blood sugar in the short term, but then it drops, making you feel hungrier. A piece of cheese would actually be a better snack.