[...this again. She doesn't know how to deal with this with people who aren't Sokka.]

A sword can do just as much damage as anything else. You've just got to get close enough. There are always going to be people who are stronger than we are - even in my world, there are people a lot stronger than me, and here? I couldn't even touch Aku. But that's not as important as doing what we can to protect what we care about, and getting out alive. You did that, Riku.

You said yourself that she wanted to be stopped - from what, from hurting her friends, hurting other people? You did that too, because you got out alive. And it doesn't matter how that happened. What matters is that you did it.