The Portrait of a Duchess - Scarlett Peckham

The scandalous women of the SOCIETY OF SIRENS are back with an explosive secret...their ranks include a duchess in disguise
Once upon a time she married in secret...
An activist painter of radicals and harlots, Cornelia Ludgate dismisses love and marriage as threats to freedom. But when an inheritance gives her the chance to fund the cause of women's rights—on the condition she must wed—she is forced to reveal a secret: she's already married. To a man she hasn't seen for twenty years.
Oh...and her husband is a duke.
A horse breeder with a clandestine taste for revolution, Rafe Goodwood never expected to become a duke. But now that the title is his, he is plotting to shock the ruling class with ambitions of reform—and reveal the infamous Cornelia is his duchess. That just presents one problem: he must not fall in love with her—again.
Now they must resist the...