YOU SAID:
The sister of the mistress is stabbing the mistress's sister
INTO JAPANESE
愛人の妹は愛人の妹を刺しています
BACK INTO ENGLISH
The mistress's sister is stabbing the mistress's sister
INTO JAPANESE
愛人の妹は愛人の妹を刺しています
BACK INTO ENGLISH
The mistress's sister is stabbing the mistress's sister
You should move to Japan!