He is her idol

Payton adores her brother and the feelings are pretty much mutual. Granted, they pick on each other, but they play together so well. When Mason entertains her, she just eats it up. She copies everything he does, and I mean everything. If he points at something, she points. If he laughs, she laughs. If he dunks his head in the bathtub, she dunks her head. So cute.