YOU SAID:
My husband left me for my sister's dog's toy.
INTO JAPANESE
夫は私を妹の犬のおもちゃとして置き去りにしました。
BACK INTO ENGLISH
My husband left me as a toy for my sister's dog.
INTO JAPANESE
夫は私を妹の犬のおもちゃとして残しました。
BACK INTO ENGLISH
My husband left me as my sister's dog toy.
INTO JAPANESE
夫は私を妹の犬のおもちゃとして残しました。
BACK INTO ENGLISH
My husband left me as my sister's dog toy.
That didn't even make that much sense in English.