"That would really depend on the context. Any of the cases you mentioned are possible." She replies neutrally, though there's a small pause before she continues.

"That's wishful thinking. While there probably is a chance for it, a possessed soul will have a really hard time regaining back any control on its own. A great majority of the times, external interference is almost always needed. That's why exorcists exist, after all. It's how things are in my world." She's starting to catch on to ideas about why Marisa is asking her all this all of a sudden, but let's give it a bit more time and see where this goes first.