Where did Lisa go?

Lisa went missing on March 1992 and they don't know if she got kidnapped or ran away. The cops have been looking for about a month now and they still have no sign of her. She has seemed to vanished in thin air. Her dad has given up, but her mom, brother, and friends haven't. On May 1992, her parents hear a loud bang in her room. When they ran into her room they were horrified by what they saw.