Kal too old to be a sister, lawl. xD
That's what you get for not dying your hair I 'spose,
obaa-sama.
Not sure Ashara would play the prt of an older sister though, she considers the Chapter Keepers to be "higher" in the pecking-order, and as such views them as superiors more than outright friends or family. Of course, if lil' Salem insists on playing the brother/sister card, I suppose she would play along just as to indulge his wishes - so long as it doesn't get
weird. :P
And then, does that mean that he views Rodias as his Papa? xD
Oh right, do our characters need to eat at all?
Given that the homunculi maids in the canon setting had to eat, quite a lot, and Aura was shown eating (what was eseentially a McDonald's meal), I'd say that if you're not undead, a construct or other being that doesn't
need nutrients, you
probably need to eat something, sometimes. Be it actual meat, souls, blood or whatever. Doubt Tree will be too picky about that particular detail though, unless we're in an area with absolute no food. Although, CZ was shown to want to eat breakfast with Lupusregina, and she's an automaton...