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.

Mara stayed calm and studied the coil. A small screen on its base showed a number climbing: 2:00, 2:01, 2:02. The gap was growing on its own, slow but steady. The machine was still running, quietly pushing her further ahead of Ines every minute.

Mara found a dial marked 'phase offset' and slowly turned it back. The climbing number paused, then ticked down. 1:59. 1:58. It was working, but the coil started to whine again, that same too-high note. Turn it too fast and the air might fold a second time.

Mara breathed slow and turned the dial one careful notch at a time. The whine settled. The number slid past one minute, then thirty seconds. Across the room, Ines started moving in real time with her, their waves finally matching. At 0:00 the coil went quiet. They were back in step.