The father must have (spoilers)
I'm watching this for the tenth time and the father must have heard the young boy repeatedly say "stop bouncing the ball." I know he was upstairs on the phone but I can't believe he didn't hear the ball bouncing or the boy say stop. Personally. I think he wanted to abuse the son because the father hadn't elevated to abusing the little girl. Even if the boy said nothing, I think the father would've blamed him anyway.
[Can I add again that the little girl needed her behind disciplined! I remember the movie "Enough" with J Lo. Remember how the girl was loyal to daddy but after a couple of incidents, she changed her tune!? She was younger than this brat!]
**I can please only 1 person per day. Today is not your day. Tomorrow isn’t looking good, either!**