A Psychopath!?

I was surfing the internet just a little while ago when I stumbled upon a rather peculiar test which claims to be able to show if you have psychopathic inclinations.

The test is pretty simple to do; all you have to do is read a short excerpt depicting a situation with a queer ending, and then you answer the question posed to you.

That’s all.

Here’s how it goes. You can try it out yourself.

Story
A woman, while at the funeral of her own mother, met a guy whom she did not know. She thought the man was amazing. She believed him to be her dream hero so much so that she fell in love with him right there, but never asked for his number and could not find him. A few days later she killed her sister.

Question
What is her motive for killing her sister?

Before I proceed to tell you the answer, I must let you know that if you happen to get the correct answer, it would mean that you could probably become a psychopath. I, for one, got it right.

Hmmm..

Anyway, here it is.

Answer
She was hoping that the guy would turn up at the funeral again.