Make sure you don't have sex with her till the quest ends.
- First, banish the ghost in Evergreen college then wait in the lobby for some time until they appear.
- Get her name from one of the boys. Go to portal room and use this combo (left-sun, right-sun,up-sun, down-wind). Once a door is opened go through it.
- You will come to different version of university and Faith should be standing outside. Talk to her and tell her the truth.
- She will ask you to give her a dark mirror. Give her one and come to college level again and her quest is complete.