you might add more reactions to the weight of her bresasts, maybe moving its arms or trying to lift them somehow, she should try to sit or put them over the furniture ya know to help her with the weight.

also you can add some food (might add feederism or belly expansion too) or give the option to see her from the side

if you connect this game with others you can add her as skin or a playable character if the game founds the save file from another game

(sorry, english is my second language)