Miss Bradshaw's Bought Betrothal (Harlequin Historical)

Miss Bradshaw's Bought Betrothal (Harlequin Historical) by Heath, Virginia. mass_market edition. ISBN: 9780373299188.

Shed done it! Plain, invisible Evelyn had escaped… Fed up with being a doormat to her evil stepmother, heiress Evelyn Bradshaw pays a dissolute rake to pose as her betrothed so she can secure her freedom. But then her fake fiancé leaves her with his estranged brother Finn Matlock and disappears! Having withdrawn from the world, Finn knows the last thing he needs is the temptation of a woman, especially one like Evie. She has an irritating habit of causing chaos wherever she goes and being in places she shouldnt…including, as he soon learns, his heart!