YOU SAID:

Don't look at my sister while she is eating.

INTO JAPANESE

彼女が食べている間、私の妹を見ないでください。

BACK INTO ENGLISH

Don't look at my sister while she's eating.

INTO JAPANESE

彼女が食事をしている間、私の妹を見ないでください。

BACK INTO ENGLISH

Don't look at my sister while she is eating.

INTO JAPANESE

彼女が食べている間、私の妹を見ないでください。

BACK INTO ENGLISH

Don't look at my sister while she's eating.

INTO JAPANESE

彼女が食事をしている間、私の妹を見ないでください。