How could you reach 12 Claire aff points if you didn't start Kate's quest?
you simply can't.
Before entering the cellar for the second time with Claire, you have to have sex with her in her bedroom. BUT you can't have sex with Claire in her bedroom unless Kate is drunk. How could you give her wine if you didn't start her quest?
you can't.
So, did you cheat? did you raise aff of corr point by using the cheatbook?
If your answer is no, then please explain how you banged Claire in her bedroom without giving Kate wine... wait, wait: are you playing a ntr route where Thomas is porking Kate?

Totally and utterly pointless.