He reaches for her as she's pulling away but she's stronger than she looks and then she's gone. You're not responsible, Frank. But it doesn't matter. It can't. He takes a deep breath and follows after her as fast as he can. hating the way his heartbeat sounds underwater, loud and garbled in his ears. Is there something on the lake's floor that she's after? Does she know something? It doesn't matter if she kills herself getting there, does it?

Frank is fast, and a stronger swimmer than one might think, and when he catches up to her again, he reaches for her ankle, determined to drag her back to the surface even if he has to fight against her the whole damn way.