[Salone]

Na'lsa is a very...physical being. Lev's body belongs to him as much as it does Lev himself. He's been dormant for a long time. Oh, he's stirred. He has murmured to Lev and conversed, but now he is fully realized. Fully awake. Simply banishing him away would be like trying to pull a row of hooks from the gill of a fish. It can be done, but laborious and requiring finesse.

That, and removing him from his current 'dominant' status undoes the repair to Lev's brain, which has experienced severe hemorrhaging from the extreme amount of snake venom. Or at least, that you know of. Fixing things like that requires sustenance to break down in to raw materials and repurpose. This time his hunger is not without reason.