Psychopath Riddles and Answer

Riddle:
A woman is at her mother’s funeral when suddenly she sees a man so handsome, she instantly falls in love with her. Unfortunately, she never got a chance to talk to the man. The next day, the woman kills her sister. What was the motive?

Answer:
The woman was hoping to see the man again. If you got this correct on the first try, you have the mind of a psychopath.