Here is Goodreads summary:
TWO DIFFERENT CLASSES, ONE COMMON DESIRE... Lady Bernadette Marie Burton may be the richest widow in England, but like her dreams of finding true passion, her reputation is deteriorating. Cruel gossip, loneliness and hoards of opportunistic suitors have her believing Society couldn't be more vile...or dangerous. So when an attacker threatens her life, she finds safety in the most unseemly of places: the arms of a mysterious, Irish-American gang leader. His fortune stolen, young Matthew Milton is done playing the respectable gentleman. In the slums of New York, only ruffians thrive. But from the moment he arrives in London and encounters the voluptuous Lady Bernadette, he can't help but wonder about the finer pleasures he's missing. Or just how much he's willing to risk-not only to bed her, but to prove his worth
I received a free copy of Forever a Lady from Netgalley.