These girls....
They have no problem when their husband-to-be gets another woman to be his wife-to-be but get worked up when a mecahnical being kiss or having intimate acts with him.
Maybe they figure that they can compete against (or get along with) another preteen, but not against a fully functional and fully anatomically correct gynoid who has had over 5000 years with little else to do besides think of new ways to get pervertedly creative. Given what we know of their creator it doesn't seem like too much of a stretch that they'd be programmed exactly like that. Plus, the 'droids have already gotten to first base with him, but the human girls are stuck with just the infrequent handholding, like some degenerate scum.
It gets worst as 1 year in that world is 486.667 days, for reference Earth has 365 days in its year, so thats 121.667 more days then Earth. So with this in mind if you go by Earth years Sue would be 13 years old and that 30 year old prince is now 40 Earth years old.