The thought of doing anything too intimate with Malfoy still makes her feel...scared and ill though, because even if it's not Malfoy's fault it still happened. The sense of violation, humiliation, helplessness...it's still all bound up with him doing those kinds of things. And besides that, he's still stupidly, stubbornly insistent that they shouldn't. He tells her that she can't properly, freely consent, he tells her that she won't want to once she leaves, that he doesn't want to take advantage, that he doesn't want to do anything she'll regret.