So she discovered her whoredoms, and discovered her nakedness: then my mind was alienated from her, like as my mind was alienated from her sister.
Then my mind was alienated from her - literally, was broken off from her. Just retribution for "her mind being alienated (broken off) from the Chaldeans" (Ezekiel 23:17), to whom she had sworn fealty (Ezekiel 17:12-19.)
She discovered her whoredoms. "Discovered" implies the open shamelessness of her apostasy.