YOU SAID:

I don't think she came home at all last night.

INTO JAPANESE

私は彼女が昨晩帰宅したとは思わない。

BACK INTO ENGLISH

I do not believe that she came home last night.

INTO JAPANESE

彼女が昨夜帰宅したとは思わない。

BACK INTO ENGLISH

I do not believe that she came home last night.