So Aaliyah was a "backup" heir in case the ruling queen completely failed to give birth to a biological daughter. But that would suggest she is not directly descended from the founding witch, yet she has "Witch's Blood" as an attribute. Maybe the king is from a branch family? Still doesn't explain why their names have to fall out of use.
She's showing more personality now. I hope this is the end of him calling her "boring", because I got a feeling she has a lot more to bring to the table as a character. That smile at the end seems rather telling.