It was about a child and her family moving into a home that was haunted by a little girl, in the end they found an old doll in a well on the house property that belonged to the ghost. I think the ghost may have had a little dog. Any help would be appreciated.

Did it have Dakota Fanning or Robert DeNiro in it?

I believe this has been previously asked and answered:

https://www.askmehelpdesk.com/movies...child+of+glass

I agree with Purukivel, it definitely sounds like Child of Glass which is an old Disney film.

YouTube - Child Of Glass 1977