she also thought he didn't think of her as a potential girlfriend
Because a princess in the 1600s, even in the Sue's wacko-world 1600, would have any concept of being a 'girlfriend', or seriously consider being courted by a steward's son at all.
Ah well, at least it isn't historical RPS. 'Mary was the bestest princess ever, and someday she was gonna be queen. But then her Daddy King Henry VIII divorced her mom and married a horrible other woman. Can Mary get her parents to reunite? Or will her baby sister get in the way? And what about this hot Fitzroy guy? R&R!!!"