Sounds like a Punky Brewster
I'm a child of the 80's and my kids are enjoying the tv shows I grew up with along with the movies.
My youngest two LOVE Punky Brewster. We own seasons 1-3 which they almost seem to know my heart.
Anyway, I recorded the Witch Mountain movies on TIVO this weekend and my kids were watching it today. My 6yr old son who was building with blocks said that the girl sounded like someone he couldn't remember. I was in the kitchen and listened to her voice for a bit and Kim Richards when she was young sounded almost exactly like the girl who played Punky Brewster! They had the same kind of husky little girl voice.
Funny I never noticed it.
Ashley
PS: I know the girls name who played Punky. Just not going to attempt to spell it. lol