The Upright Son (The Ashmead Heirs #4)
Caroline Warfield

Her uninhibited behavior shocks him. Why can’t he get her out of his mind?
Happily widowed Lady Delia Fitzwallace revels in her newly rented cottage, surrounded by flowers and the wonder of nature, thrilled to free her three rambunctious children from the city of Bristol and let them enjoy the countryside to the fullest. If only she can avoid offending her very proper neighbor, the earl, when their children keep pulling her into scrapes.
She has nothing he needs in a countess. Is she exactly what he needs as a man?