[Well, okay, moving from outright denial into 'shouldn't.' Progress?
Katara takes a moment to sort through things. Suki's back, the Malnosso haven't hurt her, there are no obvious mallynap effects, Sokka's not here, Suki doesn't want Sokka to be here, and she feels like she 'shouldn't' talk about it...]
...did something happen between you and Sokka? [Because - yeah, she doesn't want to know about that. But what could he have done - what would he have done - oh.]
[ action ]
Katara takes a moment to sort through things. Suki's back, the Malnosso haven't hurt her, there are no obvious mallynap effects, Sokka's not here, Suki doesn't want Sokka to be here, and she feels like she 'shouldn't' talk about it...]
...did something happen between you and Sokka? [Because - yeah, she doesn't want to know about that. But what could he have done - what would he have done - oh.]
Was it the experiment?