YOU SAID:

my mommy wont let me go to the pool party

INTO JAPANESE

私の母は私がプールパーティーに行かせてくれない

BACK INTO ENGLISH

My mother won't let me go to the pool party.

INTO JAPANESE

母は私をプールパーティーに行かせてくれません。

BACK INTO ENGLISH

My mother won't let me go to the pool party.