The sad part is that you are engaging in this "study" to please your friend, to show her you respect her beliefs. The study is going to lead to a complete breach with your friend. There are only two choices: give up your mind or leave. The Witnesses don't allow any other choice. You may believe you can carve out a differing choice but your friend cannot. She is brainwashed.
My family has been in since Bible Students day. My great uncles and great grandfather believed they were the remnant b/c all Bible students believed that. It was generational. My grandmother was part of the Great Crowd. It would have been viewed as lunacy and sheer arrogance for any of her generation to be annointed. It stayed this way for generations. My grandmother doubted the authethenticity of my great-grandfather's remnant status but the Witnesses recognized it. Brothers were privileged to bring him the emblems when he was too ill to attend a Kingdom Hall.
I forgot Rutherford, Knorr's and Franz status. Henschel,s too. Sometimes in the sixties, we attended KH and the very young, very egoistic Overseer wrote to Bethel that he was remnant. It takes a very large head and no humility. Being very long time Witnesses, we laughed so hard at him. We expected Bethel to put him in his place. Rather, he was encouraged. We never accepted him as more than a faker. The Society started saying that the 144,000 already before the throne of God, absent two or three old geezers still alive, were falling away in heaven and needed to be replaced. One is never safe. No one is good enough. This teaching ran against the totality of teachings about 144,000. Since only one or two were alive and sans Armageddon, a solution was needed. When is enough enough! Why worship a God that can't keep a bunch of humans before his very throne faithful? When will Jesus align with Satan? There is no safety, no faithfulness. Doctrines don't matter. They can change in a whim. Want to die for this crap? My God may leave me with questions but my God is faithful and loving. No one would fall away from my God. Their Jehovah and Jesus, the non Christ, are puny.
You will lose your friend unless you exit now.-- a prediction. Your wilingness to study for her is admirable.