@Hounder Race is irrelevant in age-of-consent laws. Assuming this universe follows the same principles as the real world.
Even though the age of consent in Japan is about 16, if a 16 yo Japanese boy moves to America, he would be considered a minor there because now he has to abide by their laws.
The only thing age could possibly have an influence in is culture. So even if the dad doesn't want her daughter to date because of cultural reasons, there shouldn't be any legal issues in dating the dragon chick unless she is, by law, underage. Judging by the fact that she is a judge, however, means she is most likely legal.