YOU SAID:

she is laughing at nothing funny

INTO JAPANESE

彼女は何も面白いで笑っています。

BACK INTO ENGLISH

She is funny, laughing.

INTO JAPANESE

彼女は笑って、面白いです。

BACK INTO ENGLISH

She laughed at the funny.

INTO JAPANESE

彼女は面白い、笑った。

BACK INTO ENGLISH

She was funny and laughed.

INTO JAPANESE

彼女は面白いされ、笑った。

BACK INTO ENGLISH

She was funny and laughed.