How to deal with a jealous friend?

My friend is insecure of her mexican background. She is obsessed with Nordic cultures and she knows I have Nordic heritage. On multiple occasions she has made it a point to say I only look very Irish or very English, (I'm mixed)

And that I don't look Scandinavian at all. The whole thing is stupid and superficial but it's become a bone of contention. I really don't like that she is trying to assert that she looks Swedish, when she isn't, while saying that I don't look Swedish at all, despite having ancestry there.

How to deal with a jealous friend?
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