Is it normal that your four year old talks in her sleep?

Yes, it's quite normal for young children, including four-year-olds, to talk in their sleep. This phenomenon, known as somniloquy, can occur during lighter stages of sleep and is generally harmless. Sleep talking can be influenced by various factors, including stress, fatigue, or changes in routine. If it becomes frequent or disruptive, it might be worth discussing with a pediatrician.