seems the mother is useless, atleast help ur daughter instead of being a burden

her mother is sick

Yeah sick from the shock of her father said, and got mental unstable.

Yet another plot hole. Where's her family? If she married a Duke she certainly is not a commoner or a low noble... makes no sense that no one objected all that crap... brainwashing isn't even close to enough to justify it...
╮(￣▽￣)╭

apparently, no one's gonna help someone who got trashed by a higj ranking noble because it'll affect them :(

Yup, not every family like Navier's family. Or like Cale's family.