Apart from this woman being the 'little guy', how has she done anything differently from Tesco?
She is marketing and selling a product that has existed for years under her own branding. She most probably looked at samples of other plasters in her research and development. Is this shocking?
This is not an original idea. She has no intellectual ownership of it. For all she knows, Tesco may have had this range in the pipeline for some time.
No foul play. Nothing to see here.