Some of the word choice used for the father's speech bubbles seemed a bit confusing to me, but basically she hasn't said yes to the engagement yet, and he wants to honor her wishes, yes? As such, she has the final say and therefore the father himself can't say yes or no right there. Also, apparently him saying he wants to respect his daughters wishes is the equivalent of denying Aquasteed's request for marriage, and because he is royalty that is rude?
It's this conversation that I'm talking about on page 19:
Father: "...but just now my daughter was hurt. And so I would like to respect her wishes."
King: (This is a proposal of marriage from royalty...)
Rose: (Father, that is disrespectful...)
Am I understanding this correctly?
Edit: On a separate note, anyone else notice how many times Prince Aquasteed kissed Rose in the short time they were together? Including the one he gave her when he proposed, he kissed her three times on her hand, once on a lock of her hair, and once on the cheek. I mean, she isn't pushing him away and she clearly likes it, but damn he's moving real fast. Damn, this boy be thirsty!