I was afraid of putting my son in a bad mood, so I couldn't say anything.
There are parents who cannot scold their children, because they are afraid of making their children moody.
ご質問ありがとうございます。
① "I was afraid of putting my son in a bad mood"＝「私は息子が気を損ねるのを恐れていた」
"so I couldn't say anything."＝「なので、私は何も言えなかった。」
② "There are parents who cannot scold their children,"＝「自分の子供たちを叱ることができない親たちがいる」
"because they are afraid of making their children moody."＝「なぜかというと、彼らは自分の子供たちの機嫌を損ねることが怖いからだ。」
ご参考に！
アメリカ合衆国 
