This is how family hierarchy works: you have to obey your mom, if she's not around, so you have to obey to your older sister, actually, you have to obey your sister, whatever her age, even if she's younger than you, the same if you visit your aunt's home, you have to obey her, if she's not around, so you have to obey your female cousin. All this changes when you meet some girl, and she becomes you girlfriend, then you have to obey your girlfriend, especially if she becomes your wife.
