It's kind of a stretch to have both kids start assaulting their moms like that unless the bald creepy dude is specifically aiming for that with his methods.
Those stuff did potentially make kid grow violence, perhaps it the author way of using sexual violence as "no return point"
I saw my niece, 5 years old become excessively bad
worse kind of brat I ever known after she went to live with her grandmother home for a months during COVID
our case start from
" I don't love you" ( 2-3 yr )
demanding and screaming, stuck in mobile phone 24/7
then gradually attack everyone who try to teach her
when doing something wrong she will go straight to her mother and told that someone else did it " mostly me or aunt " (4-5 yr)
it now become
"I HATE YOU" >>
"YOU'RE LEECHING ON MY HOUSE GET OUT"
"OLD HAG"
"I DON'T WANT YOU NEAR MY FAMILY"
ignore the fact that we did help raising her when the mother went to overseas business trip.
I don't know what those relative put in her head, I only know that they put a tiktok and mobile game on her when she was 2-3 years old and parent couldn't intervene due to their busy schedule.
the only saving grace is this kid is coward outside home and never show this side when interact with other kid and teacher..