Psycho Riddle

Want to find out if someone you know is a psychopath? If they give the "correct" answer to this riddle, they just might be!

While at her own mother's funeral, a woman meets a guy she doesn't know. She thinks this guy is amazing — her dream man — and is pretty sure he could be the love of her life. However, she never asked for his name or number and afterwards could not find anyone who knows who he was. A few days later the girl kills her own sister. Why?

Click the comments link below for the answer!