Well, they did lose their edge, after all.This may be just my imagination but the girls look like they were drawn differently after they have lost their matches. It kinda looks like they were drawn with a softer look if that makes any sense.
They're no longer -as- psychotic as before (with Finne straight up being a fraud this whole time) and they get along well with the MC.
It's kinda like a Cat that starts off aggressive with their hairs up and pupils shrunk and everything, but then their features soften up as they relax and warm up to you.