By asking Josie to take his last name and allow him to adopt her, Michael demonstrates how he defines family. He and Josie won’t truly be family, he suggests, unless they share a last name as dictated by tradition, and unless Michael is listed on Josie’s birth certificate. Giving Josie the choice, though, is a way for Michael to acknowledge that Josie is becoming an adult and needs to be able to make her own decisions about her identity and who she accepts into her family.