I have a hard time separating the voice as its own entity like my ED Ts have tried to help me with. I hear this voice but it doesn't feel seperate then my own train of thought. It's good that you naturally feel seperated from it so you can actually talk back to it. It might win at times but at least you can try to fight it and stop believing it.
My ED Ts have even tried to encourage me to name it, so i can easily differentiate the ED voice from my own rational voice, like you have already done. I just have a hard time believing in all that. Even my rational voice believes Im less then because of my weight and body so the ED voice just feels like my own.
I don't know if any of that made sense, but my point is you seem to have naturally been intuitive to what is best for your psyche. I think when you are able to seek counseling it will be a great benefit to you!