The 17th-century Italian painter’s work has been getting lots of attention, and fetching ever-higher prices, over the past year or two. #MeToo is probably a factor (she was one of the rare victims of her time who insisted on a public trial of her rapist), as is the desire to compensate for the centuries of neglect female artists have received generally — but there’s also, quite simply, deserved recognition for her gifts as a painter.