YOU SAID:

My cat just died and I can't stop crying over seeing her in pain

INTO JAPANESE

私の猫はちょうど亡くなりました。

BACK INTO ENGLISH

My cat just died.

INTO JAPANESE

私の猫が死亡しました。

BACK INTO ENGLISH

My cat has died.

INTO JAPANESE

私の猫が死亡しました。

BACK INTO ENGLISH

My cat has died.