Derek and Meredith have Zola, but they want another child. If you remember, Meredith miscarried during the shooting in season 6 and later found out that she had a “hostile uterus.” This condition makes conception rather difficult so when she became pregnant, it was a miracle. During the huge storm, Meredith goes into labor and is forced to deliver by c-section in the dark. The baby is fine, but post-surgery complications arise. Bailey learns that Meredith’s in trouble and is off at a sprint to save her friend. Meredith survives and the new parents name their baby Bailey in her honor.