The Scot Says I Do — Sabrina York

Catherine Ross's world is turned upside down when her brother gambles away every penny they own. But to make matters worse? He's lost everything to none other than Duncan Mackay, the rugged Scot who Catherine loved for years -- but he never noticed her, and now she positively loathes him. But her brother's in danger of going to Newgate, and the despicable Duncan has a plan" she can claim back the money and save her brother. If she marries him...

(in the ebook anthology "Say Yes to the Scot")