We spend a lot of time with my family which I love as my nephew is 10 months older than my daughter and my niece is 3 years older so I'm hoping she loves growing up close to her cousins. However, my niece and nephew have pretty unhealthy diets with lots of biscuits, cake, chips, soft drink and juice. I don't care if my daughter has small amounts of those things when she's older but the quantities that they consume are pretty bad - so much that they rarely eat lunch or dinner because they eat so much junk.
Now I know it's my sisters choice to feed her kids those things, but as my daughter gets older and I limit her consumption of those types of food, how do I explain to her that she can't have 5 biscuits instead of a sandwich when her cousins are sitting up munching on that type of food? I don't want to make my sister feel bad if my daughter repeats what I say, but when she's too young to understand good nutrition, what do I say?