Yea it’s the same your welcome
I think the answer is Upper-Class Families. Not sure though.
It could be the fact that she is an athlete and since she works out a lot her muscles grow and get heavier and there for her weighing more then her sister since she does not work out as much as her sister does
Assuming that you're referring to 'the rules of the game',
The reason why waverly's drawn to the elaborate secrets of chess is because she did not get a good overnight , and represent the relationship between her and her mother