I assume they reached out to her, DNA test companies have been giving them to influencers for the past couple of years, I follow (ed) a couple of Spanish influencers with similarly young fans who got the same. As you have said I do not get it, no one in the age of her followers is likely to be buying this, not to mention (I would assume) a DNA test is generally something you become more interested at an older age? ( not sure but, as I have said earlier about my dad doing his family tree, he did so as a middle aged adult which seems to me the time you become more interested in teh past in this way)