There's a part of him that's been terrified that she won't, mind stuck on the worst case scenario. Sans's simple affirmation shouldn't make him feel better, and that feeling of reassurance probably won't last long once he's left alone in the cell to wait, wait and wait, but for the moment it works. It's like running cold water over a burn or scratching at a mosquito bite; a temporary relief but relief all the same.

It's good enough to carry in the moment.

He scrubs at his face a few times, taking a deep breath before taking his hands away and standing up. His eyes are red rimmed and glossy, but he doesn't look like he's about to burst into tears anymore. He gives Sans a shaky nod and a shakier smile.

"Yeah. Can't have you getting into any trouble over me."