Well if Nishi and Chrys fail, I can see Diva trying it.
And I would hazard a wild guess that Diva's not nether immune simply because she's still made out of a demon's idea of Banana's Foster. If anything, assuming she's "double aura'd" you think she'd be even tastier than normal.
Actually now that I think about it, why isnt Sharess super super old? Like as in dust in that jar? Her aura is gone right? Yet her body is somehow still producing mana? Doesnt that imply a separation between aura and conscious? Its like, she took a chunk of her aura out, and transferred her memory to that as a summon much like Diva, but then because she somehow didnt kill herself doing it, unlike Diva, her body is still alive producing mana.
Unless... she REALLY is a corpse, as Kiel seems to think, in which case anyone, Diva, Sharess or Snadhya would have to become a golem trying to reanimate it.