Your step-daughter, Chloe, was kidnapped and used as a sex slave for 2 years. You rescued her, but she is no longer the sweet virgin you knew: her kidnapper corrupted her into craving humiliating, degrading sex, with her begging you to shop sexy clothes for her that please men, and also to ask if any of your co-workers/friends are willing to sexually humiliate her to satisfy her sexual craving. She doesn't want to have sex with you, b/c she still wants you to see her as your innocent daughter, but she wants you to be there watching over her when she has sex, so she won't get hurt like she did with her kidnapper.