So, it's kind of been established that any mortal being from the physical world has a soul, but a changeling isn't entirely mortal, so do they even get souls in the first place? And even then, when it comes to make "The Choice", whether to become fully Fae or fully mortal, what kind of effect would that have on their soul? I mean, if they became human their soul would change, but if they became fully fae, does that mean that their soul ceases to exist because they lose their free will? Does that count as their death? How would this get explained?
Also, I'm reasonably sure all of this is basic information, but I'm not sure.