American Horror Story : Season 3 - Coven Finale - Fiona's Soul - Spoilers

I was re-watching season 3 (Coven) and towards the end of the season Fiona summons Papa Legba to strike a deal with him but refuses her because she "has no soul."

Yet in the finale of the season we see Fiona doomed to spend eternity with the Ax Man in a run-down trashy cabin....aka what her version of Hell would be. Um, what?

If she does not have a soul, then we should not be seeing her in any sort of after-world, am I right? How can her soul be doomed to stay with the Ax Man if she supposedly doesn't have one to begin with?

because, as has been said before, the writers just don't care what audiences think (^:

She had already sold it to Axe Man.

There is a scene, where she asks him to help her with the meeting with the witch hunters. He says something like, "It'll cost you." She asks what. He answers, "You have to stay with me forever." Fiona agreed. Of course, she didn't take it literally at the time, but apparently it was a legit deal. (It's been a long time since I've seen Coven, so forgive me for not having the exact lines exchanged between the two.)