YOU SAID:

You can just ignore her when she gets moody

INTO JAPANESE

彼女が不機嫌になったら無視してもいいです

BACK INTO ENGLISH

If she's in a bad mood, you can ignore her.

INTO JAPANESE

彼女の機嫌が悪い場合は、無視しても構いません。

BACK INTO ENGLISH

If she's not in a good mood, feel free to ignore her.

INTO JAPANESE

彼女の機嫌が良くない場合は、遠慮なく無視してください。

BACK INTO ENGLISH

If she's not in a good mood, feel free to ignore her.