I could be wrong (I have been before
) but I don't think the grandparents are involved in her dissapearance. I do think there are some things they aren't telling as far as the relationship between the Mother and Grandmother, which I think is the reason the mother and child left their home in the first place. It's almost like the mother did something with the child because she didn't want the grandmother to have her. I think the Mother is a pathological liar. I find it odd that there seems to be conflicting dates as to when the little girl was last seen.