The Earl’s Indifferent Daughter by Elizabeth Heights

Lady Esme de Neville has found true love… or has she?
Among the flatterers and fortune-hunters lining up for her hand, one man alone has captured her heart – and she will do whatever it takes to convince him of her affections. But after surrendering her virtue, Esme finds herself unceremoniously abandoned and forced to await her lover’s return at the country home of her sister, Frida, and brother-in-law, Callum.
Adam is a seasoned warrior, tasked with bringing Callum home to the highlands to his father’s deathbed. Upon arriving at Ember Hall, he unwillingly accepts a new assignment; to guard Lady Esme – whose youth and beauty threaten to topple the high barricades that have protected his heart for many years.

For Esme, the long days of waiting pass slowly, with her brooding bodyguard providing her only source of distraction. Despite his best efforts, Adam is unable to resist her overtures of friendship. Opposites attract and soon the sparks of romance begin to fly.