This is book number 2 in the Katy Lambright series.
New Club, New Crush ... New Mom? Just as Katy is feeling settled in her new school, everything falls apart at home. Her father, believing she needs a mother, starts courting a woman Katy refuses to accept. Tensions rise as Katy schemes to send the woman packing. Meanwhile, the pressure builds at school as Katy joins the debate team, encounters a teammate's scorn, and faces her growing feelings for a boy her father will never accept. Can Katy prove she doesn't need a mother's guidance even as she discovers more of what the world offers?