Oh god, Terezi, you poor thing! I wish you had said something sooner so you didn’t have to deal with all this alone for so long.

Also if I’m reading things right, isn’t there basically a Terezi out there who decided not to kill Vriska, so no matter what Terezi chose, there’d be some version of her suffering anyway. Like it doesn’t matter what they do, because there will always be an alpha timeline where they make the choices that Skaia or whatever needs them to make.