His head jerks up, and Hermione watches him over her shoulder as his lips fall apart and his breath sucks in at the sight of her there – gripping the bedpost with legs apart, only in a g-string and that unlaced corset, waiting for him. There is shame and want in Malfoy's eyes, and Hermione feels she should recoil from that want but there is something fizzing in her stomach in response to his reaction to her that she can't deny, stripped naked of dignity and pretence as she is. It makes her feel dirty, but she responds to his lust anyway, on an instinctual, needy level that makes her feel just as ashamed as he clearly does. They shouldn't be ashamed – Hermione knows this.