The appearance of Mr. Byrne serves as a reminder to Niamh of the uncertainty and mistreatment that defined her life after she lost her parents and before she met the Nielsens. The memory of that life pushes Niamh to cling more closely to the Nielsens. By accepting Vivian’s name, Niamh accepts the parental care and protection they provide her. Her new name also signifies the beginning of a new, better life and the end of all the misery she suffered as “Dorothy,” just as becoming “Dorothy” allowed her to compartmentalize the attachments she and losses she suffered as “Niamh.”