You do know in history princesses are historically only really used as political bargaining chips and aren't given actual power. If a queen leaves the daughter normally goes with her, and queens were often sent back if they couldn't birth a son, birth at all, had bad relations with the king, etc. Some were even killed and cursed for being unable to.
She's not Blanche's blood related mother. And queens are also treated as political tools historically. OG Abigail was sent to the King's country precisely because she was supposed to produce an heir but she didn't because she didn't give birth. So if she's sent back because she didn't give birth why would she bring a child back as if she did? I'm sorry but that makes no sense.
i feel like she’s gonna be like “mmmm divorce doesn’t sound bad but what about princess blanche she’s just so cute how could i possibly leave her