Lets put all the kidnapping bullshit aside.
Just fucking marry the cunt, abuse of your power.
For starter fire or imprison your "maid" she's simply another cunt, and if they don't even allow that just fucking stab her, what are they gonna do? She's just a maid you're a princess/the wife of the crown prince.
Rise in power and just threaten everyone, the bastard prince is the only one that as a say against you. Act his way for a few days/weeks, use any opportunity to go out without him and threaten the knights assigned to you to either fuck off or help you run away.
Fuck this entire bullshit.