For people who haven't read ahead.

I didn’t even think about that! This theory makes a lot of sense and as soon as I read this, everything clicked into place. Like the sorceresses’ faces were blacked out because we would recognize them if we saw them. Because we saw some of the maids’ faces in one cecile’s flashback.

I also think that the three guardian sorceresses are Cecile's maids. I also think Cecile is the Grand Sorceress. Not the Grand Sorceress's daughter. But the Grand Sorceress herself because she clearly knows very ancient spells, like muscle memory (or maybe brain?) I dont think just being the daughter will make her that proficient to using ancient magkc hence I think she's the grand sorceress. Also she has the bearing of someone with a great status. Like what other npc said she really does seem like an empress. Also the way she's not affected by any magic and she summoned a freaking dragon proves she's too powerful to be just the daughter.Maybe when she was doing her research on how to stop Eugenphi's curse some magic gone haywire and back fired to her and revert her back to being a kid and she lost her memories. Or her childhood memories might have been fabricated by the maids. The Navitan royal family never really seen her so maybe the maids just made up the story or altered their memories that there was an illigitimate daughter named Cecile. Maybe they never really stayed in the place where she supposedly grow up or because the maids doesnt really know how to clean it ended up like that.

Im sorry this is so long. I got excited. ヾ(❀╹◡╹)ﾉ~

Her maids were females... The guardians look like males... unless I’m wrong