Just because you like the interaction doesn't mean you're on her side. In any case, I really hope that Tavros decides to prove himself by trying to kill Vriska by communing Bec or somthing. It almost certainly wouldn't work, but one death is not anywhere near what Vriska deserves.
Really? I thought it was the side of "I hate how Vriska is suddenly so pivotal to the story" versus the side of "Vriska is the best troll, I want to see more of her", rather than anyone actually holding allegiance with her. Has anyone ever been on Vriska's side? Terezi was for a while, but that didn't work out. And I guess they played Sgrub with her, but I'm not sure if that actually counts, since that kind of logic would place virtually everyone to her side by proxy. And she's been kind of, you know, betraying everyone by engineering a whole game session into producing an unbeatable final boss.
Also, Karkat probably is flipping his shit over this. He was flipping his shit over it when he thought it was still John's fault. Or possibly he can't hold something like ruining his four-hundred-hour campaign and depriving him of his own universe against Vriska, since he knows that that's just what she does. You know, I still sort of feel that Vriska is going to get away with this. She's already managed to get away with crippling Tavros, killing Aradia and blinding Terezi, losing nothing but her magic cue ball and the time she had to spend without her VISION EIGHTFOLD. And apparently she's got some kind of karma beam, and she can now drain luck from her enemies.