Just for future reference: I asked my mother about the blueberries, and she says they must be dried. Fresh blueberries are laxative while dried ones are not. (After my my mother stated this, there was an inconclusive but interesting discussion between this biophysicist, his chemist mother and his biochemist father about why that would be. But I'll spare you that part because, as I said, it proved inconclusive.)
Interesting!
Well, the oatmeal with fresh blueberries seemed to work... then again maybe she was already on the way to recovery and that was incidental, who knows!
Definitely learned a lot for future reference though, thanks again.