Amy Green is Rachel's younger sister. Amy comes to Rachel twice, both times because of boyfriend problems. She repeatedly calls Emma, Rachel and Ross's daughter, wrongly. She first thought Emma was a boy called Emmett. The next time she appears she keeps calling Emma "Ella". The first time she sees the baby, she declares "You know what would be great? If you guys died!", thinking she would inherit the baby and her trials and tribulations would be made into a movie (similar to Baby Boom with Diane Keaton). She is, however, greatly offended when she learns that actually Chandler and Monica would get custody of the baby Emma instead. She and Rachel then started fighting when Amy said that Emma was not cute. Chandler sorted them out like a father would do.