Racism:
prejudice, discrimination, or antagonism by an individual, community, or institution against a person or people on the basis of their membership of a particular racial or ethnic group, typically one that is a minority or marginalized.
I'm struggling to see in what way was this lady in any way prejudiced, discriminated against or antagonized as a result of her racial / ethic group?
She was clearly being asked about her heritage / ethnic decent, a pretty pedestrian question. Having lived abroad the majority of my life, I have been asked endless times about where I come from. Am I American, am I Irish, Scottish, English, French, Italian?
Even today a frequent line of questioning at work goes along these lines..
Work person: Are you French?
Me: No, I am British.
Work person: No but come on you must be at least part French, you have a French name..
Me: Nope, I am as British as they come...
Work person: No, no, no really come on. You speak French like a native and you have a French name.. you must at least have one French parent?
Me: No again.. both parents British..
Work person: wow, I really can't believe it..
Me: Look if it really interests you, I am of Irish catholic & Scottish descent, born in England, raised in about 9 different countries including France where I spent 3 years in a French school.. hence why I am bilingual..
Work person: ah... wow, how interesting!
Do I find the above offensive, marginalizing, racist? No, on a bad day when I'm busy it's mildly annoying as I want to get on with it. It's conversation, natural curiosity a desire to better understand a person and where they came from. Could I willfully misconstrue this as racism and take offence? Sure.