Were the relevant books published in Braille alphabet? No.
Books about aging being placed up a set of stairs and too high/low on the shelf? Too low on the shelf, but not aging. You have the right idea, though. Children's books placed too high? No.
I don't want to make you guess at this point, and you've already given me a lot of genre locations to think about at work... thanks!
The section is on pregnancy, which happens to be on the bottom shelf -- maybe not the best place for someone who may be unwieldy on her feet.