Blackmailed

A 15 year old girl named Lily starts getting creepy texts and calls from someone she doesn't know. There is no caller id. At first she thought it was a little prank but then the messages and calls got more threatening and stalkish. The person finds out some of her deep secrets and blackmails her into not telling anyone. Soon this person tells her to meet her in a ally in town. Will Lily finally find out who this person is and get them to stop? Or will things get worse now that she knows their identity.