A Secret Heart by Lacy Williams

The last thing middle brother Ed McGraw wants is to be tangled up in a scheme to find a mail-order bride for his black-sheep brother. But that’s right where Ed finds himself…writing love letters and not signing his own name.
Intrigued by the woman who writes back.
Rebekah Edwards keeps her dreams to herself and finds contentment working for the local newspaper running matrimonial advertisements. Until the day a new ad appears—one written by the very rancher Rebekah has pined for her entire life.
But just as she strikes up a correspondence, Rebekah finds herself drawn inexplicably to Ed McGraw—the wrong McGraw brother for her. What will happen when she finds out the author’s true identity?