Stone cold fox / Rachel Koller Croft.

Enhanced descriptions from Syndetics:

A perfectly wicked debut thriller about an ambitious woman who, after a lifetime of conning alongside her mother, wants to leave her dark past behind and marry the heir to one of the country's wealthiest families.

Like any enterprising woman, Bea knows what she's worth and is determined to get all she deserves-it just so happens that what she deserves is to marry rich. Filthy rich. After years of forced instruction by her mother in the art of swindling men, a now-solo Bea wants nothing more than to close and lock the door on their sordid partnership so she can disappear safely into old-money domesticity, sealing the final phase of her escape.

When Bea chooses her ultimate target in the fully loaded, thoroughly dull and blue-blooded Collin Case, she's ready to deploy all of her tricks one last time. The challenge isn't getting the ring, but rather the approval of Collin's family and everyone else in their 1 percent tax bracket, particularly his childhood best friend, Gale Wallace-Leicester.

Going toe-to-toe with Gale isn't a threat to an expert like Bea, but what begins as an amusing cat-and-mouse game quickly develops into a dangerous pursuit of the grisly truth. Finding herself at a literal life-and-death crossroads with everything on the line, Bea must finally decide who she really wants to be.

Like mother, like daughter?