情定愛琴海

中文版（這個問題主要測試一個人是否具備變態殺人犯的心理素質）

情節：有一個女的，在父親的喪禮上，遇見一個白馬王子，這個男的讓這個女的有託付終身的想法！

問題：喪禮結束後，這個女的回到家，做的第一件事情，就是拿刀子殺了自己的姊姊，請問動機是什麼？

 PS:這個要自己想的動機才準！

English Version (This question is the major purpose to test a person if he/she possesses abnormal psychology)

Story: a woman meets a man whom this woman falls in love at first sight at her father’s funeral and she would like to live with this man in the rest of her life.

Question: after funeral and this woman gets home, the first thing the woman does is to kill her sister. Why and what is the motive?

 PS:Don't try to look for answer because it is not your criminal psychology as consulting answer from anywhere.