In her blog, Cooper explains how she prefers to eat healthy food that makes her feel better. This is what she hopes to instil in her daughter, and she just hopes Grace will be healthy and happy when she's older too.
Shannon also wants Grace to be able to decide for herself, and realizes that if she does go to a friends party, she might decide to eat all the sugary snacks she's never eaten. However, she secretly hopes that she will learn the first time and overdo it and realize that she feels sick. "And next time instead of eating 12 cupcakes she might only eat three."