Ah, okay.
Somehow the SSTD transferred to the NPC, so that needs figuring out. While the SSTD system is set up to be able to transmit SSTDs to and from an NPC, it's all blocked off to where only NPCs give the PC the SSTD--it shouldn't be the other way around unless there is a line of code being overlooked. It may be possible, if she is a combat-encounter-able character, that she might have "spawned in" with an SSTD like some other enemies. That would be my second guess, anyway.