^ Doesn't everyone do that?
It's really not hard to hack a webcam.
I don't know, I kinda like to show off.
For Ty Lee, a lot of what we see as niceness is a defense mechanism. She doesn't like emotional conflict, so she takes a passive pushover role. It doesn't mean she likes it. Azula likes it, of course. Ty Lee is a kind cutie when we meet her, and on her own, she would do just fine.
Mai is also passive, but more in a directionless type of way. She doesn't have a problem with conflict and standing up to people, but she does crave a purpose. Azula gave her that. Mai is a bit more of a misanthrope when we meet her, and needs some development to become a good person. Her selflessness for Zuko was the light breeze on her spark of morality.
I think both girls have a slightly stunted morality as well. They care about their friends and loved ones, but beyond that, there doesn't seem to be much questioning. Products of the FN, indeed.
Azula is a more perfect product of the FN. She doesn't lack for direction or conflict resolution skills, but her morality is almost non-existent. For her, serving the Fire Lord, and more specifically, proving herself to the Fatherlord's (sic) standards, is all that matters.
I wonder if seeing Zuko fall out of favor taught her, perhaps subconsciously, how kindness and perceived "weakness" will be cast out, and being a royal child is no protection. Without an influence to temper that lesson, Azula acted rationally in her environment. She worked for the success that she perceived. Ozai nurtured the qualities that he valued, which made for success in his FN, but frustration or failure in any other.
In the FN, she was the ideal hero, like Beowulf and Gilgamesh. Azula was steeped and entrenched in the Wartime FN culture. As it failed, so did her whole social construct fail, and she needed to construct a new one in order to continue. What we've seen so far in the comics is the equivalent of tearing down a condemned building. You need to break down what's left in order to begin construction on the new.