This time, she's vaguely ready for something to happen in response. Now that she knows Sans isn't himself, it's easier for her to anticipate an attack-- and dodge it. She jumps to the side and lets the bones sail by, keeping her eyes and arm up in case he tries it again. But this time, she seems to have distracted him.

"I know I can't-- I'm not in your head, after all," she says gently, stepping a little closer to him. "But I'll listen if you tell me how you feel. If any part of you still recognizes me, Sans--" And she thinks there might be, given how mentioning the favor she said she wouldn't take got his attention. "--you know that's what I want to do. Just listen."