The Princess's Duties

Princess's have duties
that's what my father has drilled into my head since I was little
Duty #1 Support the King
Duty #2 Charity work
Duty #3 Strengthen the nations unity and stability
Duty #4 Support and Encourage the kingdom
And finally Duty #5 Marry a PRINCE and eventually rule the kingdom

but what if I don't want to marry a man...