> With 267 followers, her Instagram account usually had modest reach but the post of her child attracted nearly 7,000 views, 90% from non-followers, half of whom were aged over 44 and 90% of whom were men.

Not uncommon at all. I'd also say her parents are prolly millennials, the supposedly "tech fixer" generation. Next, if their (young women) IG account is a business account they know their metics/audience... You can type in literally any name and an attractive women is going to be the first result on search. Go see who follows their public profile and it'll bear out the quoted metrics above. Finally, this is almost all IG is