The demonic technicians didnt have the technology that the terrestial scientists that built Elohim had before, but they did have their own devices and techs that could recessitate the body and put new upgrades that could pull the angel of death closer to the darkside.  Hooking up IVs of quicksilver to pump into her internal organs as the techs took and removed the damaged appendages from her body replacing them with new ones.  The shielding of her mask would fall away as they loosened the screws on it and opened up the visor to see how badly the damage was done from the impact of the bullet to her head.  "Hmm structural damage to main ortary circuits, must replace and reinstate basic bio feed back to motor generators," one of them would say as they worked on trying to get the mechanical maidens body to work with her computer like brain.