Mystery girl in old family movie

The identity of this little girl, circa 1950, is a mystery to my siblings and me. This is a frame clipped from a family movie. She was accompanied by my brother, Becker Spaun, who is visible in the yellow shirt behind her, and appeared to be about a year older than he was. This was before I was born in 1951. Any clue who this might be? I know it is a shot in the dark, but we really would like to know. If you can help, email me at montgomery.editor@yahoo.com. Thanks, Mary Lou Montgomery