Sleepy Little Girl

Recently we have been waking up in the morning to a little girl sleeping on the floor outside our bedroom door with her pillow and her blanket. I asked her this morning "why do you keep sleeping outside mommy and daddy's door," she replied "because I miss you so much, I miss you so much mommy". Not sure what is going on with her at night but I never hear her get up and try to knock on the door. She is just laying there sleeping on the floor. Mikayla is my heavy sleeper and I am not sure what keeps waking her up. We will have to pray with her at night that she has peaceful sleep and that she sleeps all night in her bed!