Originally posted by dadudemon
It kills them by killing them as if she is a corporeal being...just the same as any "bad" ghost in Ghostbusters did.
The grudge also can break down time and space too.
(Like when the teacher was occupying the same space yet he couldnt see Buffy, but could feel her.)
The grudge does a lot of weeeeeird illogical things.
And remember, its not kust Kayako.
Its Toshio, the father, the 1st carer and anyone else the Grudge has taken over. The ghostbusters are outnumbered.