YOU SAID:

She was talking through her hat.

INTO JAPANESE

彼女は彼女の帽子を話していた。

BACK INTO ENGLISH

She was talking in her hat.

INTO JAPANESE

彼女は彼女の帽子に話していた。

BACK INTO ENGLISH

She was talking to her hat.

INTO JAPANESE

彼女は彼女の帽子に話していた。

BACK INTO ENGLISH

She was talking to her hat.