My hot take (if anyone cares):
If I understand the situation correctly, the women in the window, the shopkeeper, and the child are all based on an actual employee and her family. Why don't they just say that without the silly backstory? "When designing the look and feel of the new shop, we took the opportunity to allow one of our own to imagine themselves and their loved ones in the imagined world of Main Street USA." Or something similar.... Less tokenism, more "look our workforce is diverse", and more fun ("Hey, that's the lady that did this painting! And all these people are her family. Cool!").
To paraphrase Mary Poppins: "Why must you always complicate things that are really quite simple?!"