Bloeme Emden changed her name to Nancy Winifred Altman due to her adoption. Adoption often involves a change in the child's name to reflect their new family and to establish a sense of belonging. In this case, Bloeme Emden likely decided to change her name to Nancy Winifred Altman to align herself with her adoptive family and to create a new identity within that family. The decision to change one's name during adoption is a personal one and can be influenced by various factors, including the desire to embrace a new family dynamic and to establish a fresh start in life.