The Gatecrasher by Madeleine Wickham

Fleur Daxeny is a charming and cunning woman who has perfected the art of crashing funerals to find wealthy widowers to seduce and exploit. Her latest target is Richard Favour, a recently bereaved man who is vulnerable to her allure. As Fleur weaves her way into his life, she finds herself unexpectedly drawn to his family and the warmth they offer, challenging her usual detached approach. However, her past schemes threaten to unravel her newfound connections, forcing her to confront the consequences of her actions and the possibility of genuine change.

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