...except that I do think that there is a valid point in that she was a princess of the Fire Nation and not the authority in her own right.

Also, I did feel that Azula's insanity took away from the awesomeness of Zuko and Katara taking her down.

I haven't been broken up with by letter or email but from my pov I can see a lot of way in which it might be better for both parties than something that is face to face.