I AM YOUR SISTER

When I was in college, my girlfriend got a call from her mother, and then from her sister five minutes after. Her sister was freaked out and the mother was, too.

Her sister was a new college freshman, and she and her new roommates decided to use a Ouija board one night. Apparently they had contacted some spirit who apparently knew her sister's name. They asked:

What is your name?

I don't have a name.

Who are you? 

I am your sister. I am a year older than you.

The next day, her sister called her mom and told her what the Ouija board spirit had said. Her mother then told her about the miscarriage she'd had a year before her sister was born. Her mother and father had never told anyone.

Story source.