YOU SAID:

she told me she was sixteen

INTO JAPANESE

彼女は私に言った彼女は16歳だった

BACK INTO ENGLISH

She told me she was 16 years old

INTO JAPANESE

彼女は16歳であると私に言った

BACK INTO ENGLISH

I told myself that she was 16 years old

INTO JAPANESE

私は彼女が16歳だったと自分に言いました

BACK INTO ENGLISH

I told myself that she was 16 years old