My husband told me not to do this. To make her sleep alone. I thought he was mean and my daughter needed me. Now, she is nine and still wants me to come sleep with her until she goes to sleep. I wish I had NEVER started it. It is much harder to stop it after years.
My friend's oldest started sleeping alone, but her youngest is still in their bed. It has caused many fights for them and is probally why they don't havffe number three ;-)