the better question is why she kept getting scared... I do this to my kids all the time and the 4 yr old has already stopped getting scared most of the time

I was wondering that too.

But if I was her, he wouldn't have lasted that year without some form of payback...

He didn't his sister made sure of that after this video was posted. (ok I really have no idea whether that is true or not)

given her weak constitution in this video, i'd wager a guess she couldn't dish out payback if she tried

Hmm that makes sense too.

I guess it would also explain why she never expected it.

Someone needs to listen more closely to footsteps

ok there's way too many sexual comments on that video  

its faked

the scaring or the sexual depravity of the internet commenters?