I'm amazed that her mother figured out that it was her all along. I thought that she would reveal that to her mother later, and if she does she'll probably be amazed her mom knew all along.
A lot of people are saying there's death flags, and they might not be wrong. But woe to whoever pisses off Finea. She could level a country if she get's angry. I don't think it's a full on death flag, but someone might try to attack the family and figure out they bit off more than they could chew.