you're right!!! but i feel like im going fucking insane bc even a person who is against the infantilization of furi (and is a nvfr shipper) somehow sees sige (and nahi) as a child, claiming she's depicted as one. but no one treats sige like a child except for neuvi, and even then he gives her the space an adult needs to live independently (her chara misc has him say he only wishes she's as happy during times he doesn't see her, like a father would his adult daughter who is now living independently). sige calls grown men "brave little guys" like they're children getting a shot, called fremi a "lovely boy" like a granny cooing over a mild mannered and polite youngster, and thought of wrio as an "impressive little grown up" like how yaoyao is considered a "little adult" and such considerations are only made by adults about children who are more mature, caring and emotionally stronger than most their age. if sige was a child, she'd see other children as equal to her, but she wants children to be intimidated by her like they were her teacher so they'd listen when told to take their medicine and she doesnt have to resort to tricks

honestly, if nothing about sige and the melusines changed except they were tall and sexy instead of small and cute, no one would question their adultness. and in the end, that's just body shaming plain and simple