Her husband and her brother are near identical, lmao. I thought he just had a different haircut when she regressed.
I think Ed, her brother, knows something, or suspects something, but is too much of a coward to help her. He used to sneak her snacks, so he must care about her a little. MC's other sister might be more seflish - especially considering her potential partnership with the crown prince could be affected by MC.
I think the story could be really interesting, especially since the MC doesn't seem stupid and hasn't done the whole "I'll be trash this life" heel turn that so many MCs do and in doing so usually completely veer the previous storyline off track. So as long as she keeps on her mask and pretends, she might be able to figure out exactly why she had the Lakers' family power and what that means regarding her planned murder.
It's unfortunate, but since she's been drinking the tea for most of her life then she probably also has a shortened lifespan, even if she stops now. I wonder how that'll affect the story and her motivation. Maybe a literal deadline means the plot will be pushed quicker. Either way, an exciting start!