Mirror, mirror

Jeff saw the hand mirror sitting in the middle of the floor. It seemed out of place, as if someone had left it behind. He picked it up and looked at the reflection. Though the reflection in the mirror mimicked his actions perfectly, the face wasn't his own--it was a woman's! What an interesting trick! He tried putting it down, but he realized he couldn't. As time passed, the reflection shifted to his own face, but at the same time, his own body changed to become the woman's that had been staring back at him. He tried putting it down to stop it, but he just couldn't!