Why? Elly prefers scaring and confusing her victims and then trapping and finally slaughtering them.
I highly doubt our witch endorses personal suicide. Besides, I am still not positive that Elly is the real enemy. Those cruel and evil children may be killing in her name, as evil ghosts now of course.
We should make a field trip there sometime. You know, camp out overnight. I'll bring my camcorder. Trust me, after it's over, we'll look back on it and laugh heartily. (No way this could possibly go wrong.)