She's ashamed

"Oh, ahm... I just wasn't aware the door was open." - said Kelsey, hoping that Christopher didn't see what she was doing. But from the way he confronted her, she knew that she was hoping in vain.

"Kelsey, I saw what you were doing. And let me tell you, that's sick. A young lady like you shouldn't be touching herself in other people's bathrooms! Just wait until your mother hears about this."

As he turned to leave, she ran over to him and grabbed his arm.

"Please, she can't know! She'll send me to some boarding school! Please, I'll do anything!"

Christopher stopped. He turned around to face Kelsey.

"Anything? Prove it."