She shook her head making the strands of her hair sway. "I couldn't just leave a little girl to die. Not like that. We wouldn't have been able to do it without Harry...and as it turned out they had a whole ritual set up so that when they killed her it would kill everyone she had a blood relation to." Meaning Harry and a whole lot of other people Molly didn't even know about.
"It wasn't a mistake." She looked up at Sam through the strands of her hair almost as if she were afraid to see the look on his face. "I could have said no, but I didn't. Consciously." Then she looked down again. "I suppose so, but I don't know how much help I'm really being. I just seem to keep screwing things up worse."