Escape Artist

Do not give paints to prisoner in Room 27, no matter how much she begs.

She paints sometimes with other things: with food, with her own blood, creating intricate landscapes and terrible monsters. And when she is done, she simply steps into the canvas and is gone, into the world she has made.

This is for Three Line Tales 255. Thanks to Sonya for running the challenge and Ashley Byrd for providing the prompt photo!