The Gatecrasher — Madeleine Wickham

A survivor from the school of hard knocks, beautiful Fleur Daxeny knows the best place to meet a rich widower is--at his wife's funeral. Her modus operandi is to gate crash the service and charm her way into the widower's life, his bed, and his bank account. Then she meets and dazzles multimillionaire golfer Richard Favour. This time the relationship doesn't go quite as Fleur plans after she moves into his mansion and joins his Golf Club community. She's soon entangled in Richard's family and genuinely losing her heart. But she's not the only fortune hunter trying to fleece Richard out of his money. And Fleur, with her expertise at spotting a scam, has a chance to become a real heroine and the woman of Richard's dreams...if her own past doesn't coming rolling into the picture first.