I don't buy it.
Marie's still an imbecile. I don't see this working, because the moment she doesn't let Lafine go back and treat commoners, it's Momma Choppa Time all over again. And I highly doubt she'll let Lafine go back to her commoner doctor work, as conceited as she (somehow) remains.
This could easily be the most-looped challenge yet, and it's caused her to lose control of her faculties.
Makes me wonder how Fran's gonna factor into the ending of this arc (replacement executioner wouldn't make sense because Lafine wants it abolished, so...yeah guess we'll see).