It's hard to remember what it was about...but if memory serves it was this family. The boy was in contact with a ghost that was associated with the color blue and a bell. I believe she turned into a doll when not with the boy. It was a family film...maybe just made for TV...anyone knows...PLEASE HELP! :) Thanks.
The TV movie is called "Child of Glass"; it's a Walt Disney movie that was shown on Wonderful World of Disney Sunday nights in 1978, starring Steve Shaw, Katy Kurtzman, and Olivia Barash (as the French-accented ghost). It has *never* been released on DVD, and nearly impossible to find on authentic VHS. There are bootlegs of course. It's offered on Amazon and you can do a Google scan. I daresay some of the VHS offerings are copies rather than originals.