Just to support the last idea I placed Kyra near Demi and could see that there’s a color inversion (white instead of golden/yellow and golden/yellow instead of white… well, more or less) - there are some similar characteristics with slight modifications (her cape’s support).
I also found a picture of A. Sage (is she an esper/sage or something? Where did she come from? I have to see that…) witch shows that she also wears a yellow suite (with a cape) and is performing a cure in a similar way that Demi have done when was released from Zio. My suggestion is that maybe all of them are have Esper origins. [I hope I’m not missing any detail that could contradict this]
So even if there’s no relation at all we can assume that both androids were based from the “first” 2 PS2 characters: Demi as an (android) update from A. Sage (PS2) and Wren (Forren) from Rudo (and also from Searen (PS3).
Maybe Demi’s skills to cure people came from there…