[... Keywords relevant.] Like a child breaking a toy and fixing it all over again...? That would certainly make sense... Beatrice-san, er, the witch her has powers that can revive people, so that would explain why they wouldn't care if someone died.
And meanwhile, I'm guessing the "cackle cackle" part is just to be creepy.
[Action]
And meanwhile, I'm guessing the "cackle cackle" part is just to be creepy.