Heh, recently during relaxation, I again thought about Littlefoot mother's mysterious supernatural nature... Her very-correct knowledge about path to the valley and the valley itself, things she has never seen wit her own eyes before, seeing by her heart somehow... Her spirit and voice appearances two (three in book as I remember) times...
Uh, it's still hard for me to put supernatural's appearances only on Littlefoot's imagination/hallucination...
Could she actually have supervision powers during life and ghost powers during afterlife?
Don Bluth never talked about what actually happened?