I had always been afraid of the water.

Not the polite, nervous kind of fear that makes you grip the railing a little tighter. The deep, bone-freezing kind that locks your legs and steals your voice. And my sister Meredith knew it.

She had known it since we were little girls, when she watched me tremble at the edge of the dock at our grandparents’ lake house in Wisconsin. She had seen me cry, had heard my father tell me to stop being dramatic. She had stood behind me once before, years ago, and I had felt her hands on my back then too.