User blog comment:Imouto-tan/Astraea Sears/@comment-4867780-20160429111103/@comment-4867780-20160501073552

What if the memory vessels' personality was actually a magical A.I rather than a human soul ? Like the auto-pilot on planes but with autonomous sentience, that would "take care of the house", living their assigned life and keeping everything in order in Sherria's absence, and automatically be put to sleep when she takes over, then re-activated afterwards with an update about what they need to know. Their relation to Sherria would essentially be that of a head maid towards her master, with the loyalty and dedication to match, but taking care of a life and social position rather than an estate, and identifying to it like head maids tend to.

This way you could keep the relational complexity between them without any psychological or ethical issue, as the vessels' minds would be suitably designed for their purpose, and thus not have any of the problems actual human beings would in their place.