has said alot of low things to the gaang?
aang-in the waterbending scroll,she yelled at him like she was out of her mind
sokka-said that he didn`t love their mom like she did(that was low)
toph-it was pretty cruel how she said "the stars are beuatiful tonight,to bad you cant see them"lol that was kinda funny but a low thing to say.
zuko-the whole western air temple episode exspecially at the end.(he did have it coming though)