YOU SAID:
i thought i hated myself, but i hated her.
INTO JAPANESE
私は自分が嫌いだと思っていましたが、彼女は嫌いでした。
BACK INTO ENGLISH
I thought I hated myself, but she hated me.
INTO JAPANESE
私は自分が嫌いだと思っていましたが、彼女は私を嫌っていました。
BACK INTO ENGLISH
I thought I hated myself, but she hated me.
That didn't even make that much sense in English.