I mean if someone did i think the brother would know at first sight it wasn't his sister and then quickly torture and kill them.
Really its not worth it to pretend to be the missing lady of a household when she has a brother like that
Or maybe someone did posed as Amelia, they just ended up dying tho jk
Maybe because it's not like they were separated as kids everyone knows what she looks like already so
Oh true
Obviously, Calis is the ml. And I'm surprised nobody posed as Amelia for those 5 years she's gone.