YOU SAID:

my mom let him be in it

INTO JAPANESE

母はそれにある彼を聞かせてください。

BACK INTO ENGLISH

Mother let him have it.

INTO JAPANESE

母は、彼がそれを聞かせてください。

BACK INTO ENGLISH

My mother, he let it.

INTO JAPANESE

私の母は、彼はそれをみましょう。

BACK INTO ENGLISH

My mother, he let it.