The article mentions a distinction of commercial use. Copyright isn't always that simple anyway, like the difference between a music license for personal use vs. that for streaming, etc.

If it was such an easy open-and-shut case based on the description, I doubt the artist would waste her money on a lawyer, even if seeking a settlement.

If anyone has the book or finds a digital scan, we might be able to put the subject matter to rest -- I say 'might' and not 'should' because copyright infringement has intentionally been made overly complicated by corporations, so even then it might depends on case law.