You walk in on your step-sister in the bathroom, she's stressed and angry, her skin isn't perfect and she's getting break outs. She snaps at you and tells you to get out.
Later in the night she comes into your room to apologies, she's just upset about her skin and doesn't want the boys at school to not think she's pretty. You suggest she has a facial, but not any spa facial, and proper cum facial, given to her by her big step-brother, that will sort her skin out