YOU SAID:

I cannot believe she is married now.

INTO JAPANESE

私は彼女が今結婚しているなんて信じられません。

BACK INTO ENGLISH

I do not believe she is married now.

INTO JAPANESE

私は彼女が今結婚しているとは思いません。

BACK INTO ENGLISH

I do not think she is married now.

INTO JAPANESE

私は彼女が今結婚しているとは思いません。

BACK INTO ENGLISH

I do not think she is married now.