Re: Exporting Children's Picture Book to epub... Text appears separate from image.

I would agree with Bob. It will be painful in CS6 but easy in CC 2014.

But if you decide to stick with CS6, view Anne-Marie Concepcion's series on creating Fixed Layout EPUB from earlier versions of InDesign:

http://www.lynda.com/Dreamweaver-tutorials/Creating-Fixed-Layout-EPUB/94249-2.html