"She must have inhabited a corpse to return her soul."
Lilianna Norman spoke in a complex tone, "Possessing a body is much more complicated, not always a hundred percent successful, and most importantly, after a successful possession, her Primordial Spirit and body merge into one. She wouldn't be able to leave the body with her Primordial Spirit for a long time, unable to possess another."
Carson Flores, not knowing much about these things, then asked, "So she took over a corpse?"
"That's likely."
Lilianna Norman explained, "A corpse has no resistance to a Primordial Spirit, like an unlocked empty house anyone can enter and live in. However, the occupant isn't the lawful owner of the house, so as time passes, the house will start to reject them. Additionally, as the condition of the body deteriorates, the rejection intensifies."