Has she been made aware that it's not her code? Or does she have a different relationship with the company? Since you have a working example, can you code it u

Has she been made aware that it's not her code? Or does she have a different relationship with the company? Since you have a working example, can you code it up independently? It doesn't sound like she's of irreplaceable caliber, other than through bad luck, so producing the same functionality is probably doable by mere mortals.