
Considering how it seems that MC was the only one in her family (outside of her grandma) that had light purple eyes, and considering that they are a fallen noble family, chances are that they did have some blood relation with the royal family or someone related to the direct royal family (like a cousin or something) but it was many generations ago, and the purple eyes just appeared in her because of genetic randomness. But also knowing books and authors, there is definitely more to this story cuz Chekhov's gun (every item explicitly mentioned in a story should have relevance: don't mention a gun on the wall in chapter 1 if you aren't going to shoot it by chapter 3)
I actually hope Judith isn’t in any way related to Vanessa because that would be very Alabama-esque