Out of his three kids (Adeline, Isaac, & Anthony), Bow-Eye has only fought one of them, being Isaac.
This is because when he first took Isaac in, he was a

and told Adeline "I'll give you 10 bucks if you eat all the salt in this salt shaker", which fun fact, is a lethal dose at her age at the time (12). Bow-Eye stopped her as soon as he could, but by that time she had to go to the ER.
Bow-Eye showed no

ing mercy, and Isaac's only alive because Scarf-Sight physically stopped him right when Isaac was at the brink of death.
Don't worry. Isaac is chill now, Bow-Eye and him get along great, and Isaac and Adeline have a very strong sibling bond.