Was he supposed to disable him, or maybe, use him to take the baby? Who knows what he's doing irl whole his mind sees something else. Also, we don't know what's happening outside of his head, could be a lot worse than we think.
Maybe the staff also takes damage, might need specific wood/material to fix.
She probably knew if there's one there's more and she got scared.
If you put both together it may be understandable that she used it as last resort only.
This chapter's pov: all your exes are crazy, except with the twist that one is your sister, the second is your childhood friend and the third is your senior.
Yeah, that's a good question. I assume it's because you'd be suspicious as a male alone, especially if you look older. Or that's a sign for parent and not a dude. I hope someone explains it.