1 - Mary, still on top of Chris, pauses. Her formerly furious expression is replaced by a confused / scared / ashamed one.
2 - Mary is off Chris and running away down the hall towards a window at the end of it.
3 - Mary jumps and breaks through the window, flying through the air.
4 - Chris is at the window, looking out into the early morning. Her expression is hard to read.
Start from the beginning.