Their Second-Chance Child (Fostering Family) by Karen Sandler

Tony Herrera couldn't believe Becca Stiles had applied for a job at the home he'd started for former foster kids. And that he'd hired her! Eleven years ago, she'd walked out on him and their marriage without a backward glance. But even as the old attraction sizzled between them, the single father knew that letting Becca back into his life was asking for trouble. Rebecca knew that returning to her childhood town would reopen old wounds. But Tony had a child of his own now—a little girl who needed a mother.