Well I spoiled myself all endings of the game but watched with all possible fates after the game for Gratiana. Gotta say, she doesn't heal anyone and ether sits on her ass in the sanctuary if the war is going on or she will go out the swamp and establish secret abbey/safehaven for the undead and ghouls just like herself. She doesn't do anything for the living soul. So all your arguments and this complete discussion are pointless.
