Maybe Memphis is the third book in the Bishop Family series. It can be read as a standalone or in series order.

Gray Kennedy had just completed an eight-year term in the U.S. Army and was ready to return home to Chicago. He had to make one quick stop in Memphis before he could be reunited with his family. For the last few years, he had held on to a promise that he'd make sure Jane Bishop and her daughter were doing well once he got back to the states.
He had no friends or family in Memphis, and his only plan was to get to town, check on Jane, and head straight home to Chicago. He had no idea what he would find when he got there. He certainly wasn't expecting it to be love.