While I think there are a couple standout issues with Vriska's arc in HS:BC, it has in its entirety been about becoming less childish. The Trolls have also gotten clear targeting of growing into Classpects they never did in their Doomed Session-- Vriska being the one who did embody her Classpect and created Homestuck as we know it would be lost without that. Now she has to find who she is beyond it, when we see her dropped next to Vrissy and being a bad influence. I don't think the Plot Point is necessarily about redemption. It's about Vriska reconciling who she wants to be with who she is, and ending Act 1 by being a figure who can actually engage with things like Depression Rose Selling Her Marriage Because Fate and Children Who Need Adults.

This is directly paralleled with the clear arc set up for June. She's realized she's surrounded by adults and she's not one, whereas Vriska was put in the Adult Chamber because of the narrative itself.

My thoughts on the matter are a bit cluttered, but I prefer to be optimistic. Maybe I'll hate Act 2, but I haven't read it yet.