ZH001 Zombie Hunter/Survivalist.
Option 1: Carve the top of the pistol down and use a piece of curved fuse wire or plasticard to create a crossbow pistol. Benefit of this is the holster detail can stay.
Option 2: Replace the pistol arm from the elbow with the reciprical left arm holding a Zombie/Ghoul's head from miniature ZH002. You can choose whether or not to carve off the pistol holster and you can also choose to give 'Buffy' a knife, stake, cross or similar in her right hand.