It looks like younger sisters are the same wherever you go. You'd think they would learn from their mistakes. [Though she somewhat doubts that Sokka is right every time he disagrees with his sister. Of course, Fenimore is...usually.] But that's what an older brother does--you have to keep trying no matter how much of a lost cause it seems. Among other things, that is. Shirley's wasn't so good at the advice part.