It looks to me like your mistake -- and I do think you made a mistake -- is a fairly common one. I think you probably started your story too early. Why does the reader have to know the reason for their divorce before the husband kidnaps the child? This looks to me more like background than the story itself. The reasons for the divorce is something that would come across in the course of the story anyway. At any rate, I'd consider that as a possibility.
The decision of exactly when your story actually starts can be a difficult one. I still look at the first two chapters of the novella I just finished and wonder if I shouldn't cut them.
