House Ghost

 When she was a teenager, my friend, J, had gone to a friend, who we'll call A's house to spend the night, along with their other friend, who we'll call B.

B was visiting from the next state over, and like J, she had her own paranormal background. 

Back at her home, B had been living with a ghost who had become attached to her. When he would make an appearance, the apparition looked to be a young man with black hair and dressed in a black leather jacket.

During the night of the sleepover, the three teens headed out into the back yard for some reason or other.

When they looked back up at A's bedroom window, they noticed a man beckoning for them to come inside. He looked like B's house ghost. 

So, the girls, obsessed with such matters, were not frightened of a possible intruder; rather, they figured he was trying to warn them, so they listened and ran back into the house.

Not too long after, the phone rang. It was B's mother. She was frantic, asking if everything was okay.

Apparently, before she had called, the house ghost had appeared to B's mother, upset, asking , "Why would you let her go?"