Naked, save for her lacy bra and panties, Grace's fingers slip inside her, her body writhing with pleasure. Her brother, equally aroused, watches from the doorway, his cock straining against his pants. 'You're such a naughty girl, Grace,' he teases, his eyes locked on her glistening pussy. She moans, her embarrassment fueling her desire, as she continues to finger herself, putting on a show just for him.