YOU SAID:
I returned everything I ever bought her.
INTO JAPANESE
私は今まで彼女に買ってあげたすべて返されます。
BACK INTO ENGLISH
I returned everything she ever bought.
INTO JAPANESE
私は彼女が今まで買ったすべて返されます。
BACK INTO ENGLISH
I returned everything she ever bought.
That didn't even make that much sense in English.