[It's a question with an answer that is so instinctive to her, that Katara has to pause for a moment to try to put it into words.]

It's not "necessary," but it's something I'd prefer. This is something that impacted the whole community, and so the whole community should have an opportunity to address it. I want to do this for the people who died, but I want to do this for myself too - to show honor and... not leave things undone. So I want everyone else to have that chance, too.

[Because she thinks it will be good for them.]