I read/was read this book in the 60s. It is the story of a little girl who leaves a doll behind when her family moves. I believe the doll is left on a shelf in the closet. I think they are moving from the city to a house in the suburbs, but the focus is on the loss of the doll. I don’t think she ever recovers it.
“Sad Day, Glad Day” by Vivian Thompson.