[member="Nima Tann"]
Nice post.
For sake of transparency, Callisto is an HRD (SW Terminatrix), but a highly advanced one due to being created via entechment. Essentially she used to be human, but her soul/essence was transferred into a mechanical body, along with mind being reprogrammed into a droid brain.
Meaning that to the majority of Force-users, except master mentalists, she'll appear human because they can sense the presence of organic essence and thus a degree of internal emotion etc.
Whereas Moira, though she used to be human too, is a more conventional HRD and thus in a one-on-one conversation her lack of Force presence, internal emotion etc. would probably be sensed by a reasonably powerful Forcer.