Two Minutes Out of Step

The coil in the lab sang one note too high, and the air folded like wet paper. When it snapped flat again, Mara felt wrong. Her phone said 9:42. Her sister Ines, three feet away, looked up slowly, like a video still loading. Mara waved. Ines waved back two minutes later. Their clocks matched, but the sisters did not. Mara was ahead now, and she could feel herself sliding further forward.