You need to get positive feedback for her quest. Did you gave her a mirror in the end? If yes, talk to her until she asks you to go away. Go back home, then return to the university. Her body should be in the portal room.
ok I completed the faith's quest and unlocked it. After that I found doll(actually it's like human body) in portal room and I give the soul orb to it and I unlocked the wendy girl in the truck but I don't know whether she is short or big doll. I want to know is what can I do with the Judy doll in storage and clearly can't get anywhere