Haven't They Grown

I felt like there was a bit of a bait n switch going on with the mystery of the duplicate children. While I would have whined at an outlandish sci-fi resolution, which seemed to be where it was going, the prosaic end to that part of the plot left me shrugging my shoulders. Also,the villain was entirely unrealistic in my view, and I could not suspend my disbelief. The strongest plus is the relentless and spunky heroine and her down-to-earth, likable family.