YOU SAID:

what the heck cops i didnt know she was 7

INTO JAPANESE

私は彼女が7だったことを知りませんでした

BACK INTO ENGLISH

I did not know that she was 7

INTO JAPANESE

私は彼女が7歳だったことを知らなかった

BACK INTO ENGLISH

I did not know that she was 7 years old

INTO JAPANESE

私は彼女が7歳だったことを知らなかった

BACK INTO ENGLISH

I did not know that she was 7 years old