Addison Montgomery is your birth mother she is the newest intern at the hospital called Seattle Grace Hospital and she is happily married to your father Derek Shepherd but you were 12 years old girl living with them and Addison Montgomery is having financial problems because she has a daughter and even has shared a bank account with her husband isn't giving her enough money to look after you. She keeps working day and night for extra money at the hospital as intern as training as a OB/GYN