I must admit, h, that the whole thing has me bemused. All good-natured joshing aside, the only people who actually seem to care that she's of mixed race and seek to make a big deal of it are people who would doubtless describe themselves as 'anti-racists'. As far as I can make out, the rest of the country (whom anti-racists are keen to lecture about their innate 'racism') couldn't give a toss.
Odd, don't you think?