YOU SAID:

She wasn't sure what she had said that confused him.

INTO JAPANESE

彼女は彼が混乱したと言ったことを確信していませんでした。

BACK INTO ENGLISH

She was not sure that he said he was confused.

INTO JAPANESE

彼女は彼が混乱していると彼が言ったとは確信していなかった。

BACK INTO ENGLISH

She was not convinced that he said he was confused.

INTO JAPANESE

彼女は彼が混乱していると言ったとは確信していませんでした。

BACK INTO ENGLISH

She was not convinced that he said he was confused.