Maleficent's words hit her like a ton of bricks. Because she was right. Ginger would never be able to forgive herself if she turned her back on this chance. If Peter toppled over that edge and she knew that she hadn't used every last resource, pulled out ever trick, to at least try to get him away from it, she'd never be able to live with herself.
"I'll do it," her words were again, rushed, wavering with the fear she'd locked down before. "I don't care what it is. Just leave him alone."