Cowboy Looking at Me by Jessie Gussman

Brawley Powers made a mistake he's regretted for almost eleven years. But he didn't realize he had a daughter from that night until a stranger comes to town and puts the pieces together. Brawley sees the truth, but he's not sure if the mother of his daughter even knows who the father is, and whether she does or not, if she'll let him be a part of her life. He starts an anonymous letter writing campaign to soften her heart, just to pave a path to his little girl, but he finds himself falling for the funny and sweet woman behind her emails she sends back. Can they overcome the mistakes of their past and make a beautiful future together?