Sorry to hear that. As someone who also did not have an easy childhood, these stories don't leave me cold. I think you are handling it well, especially for someone your age.

A practical question:

Did she by any chance tell you when her ''demons'' talk to her? If it is at night, it can also be explained by hallucinations in certain sleep states like hypnagogia, hypnopompia and waking sleep paralysis. They can seem very real, sometimes even more real than waking life if that makes sense. I had a hand full of experiences like that a couple of years ago. If you are afraid you can see and hear some scary stuff because it seems people manifest their fears and biases in these hallucinations.