This is the Riona who, even up to episode 7 is still asking the mc for cash to fuck her (unless santioned otherwise by Quinn to fuck for free)? Apart from finding out she's a neurotic psycho with paranoid delusions, there hasn't been much character development there. She's still just the goth girl on a one way ticket to tragedy!
Quinn, on the other hand, she'll give the mc a blow job even when he's half asleep, that's how dedicated she is! It's a shame too many sensitive souls here are just too intimidated by her.
I'm just messing with yas, it's obvious if there was a situation where you had to choose between Riona or Quinn what option to go for:
On a side note, in that scene with Quinn and Riona, I always felt Riona looked strange at the end of it, like she knew she was being used or something... Maybe she was just worn out, but she really doesn't look happy.