Have you asked the dealership that sold you the car to contact the original owner and see if they have the code?
Usually, it would be in the same pouch as the owner's manual and warranty papers.
Damn, this dude tried everything to woo her: helped her move, bought a new Bronco and then he just snaps and goes the arsonist route?
What a damn loser. Hope they make hi buy her a new OBX with insane dealer markups.