YOU SAID:
I will never let you see her again
INTO JAPANESE
私はあなたに二度と彼女に会わせない
BACK INTO ENGLISH
I will not let you see her again
INTO JAPANESE
私はあなたに彼女に二度と会わせない
BACK INTO ENGLISH
I will not let you see her again
That didn't even make that much sense in English.