@dougart Depends on the publisher I guess, all the publishing houses I worked with so far had a little bit different processes. according to my knowledge, the decision to publish a book is made by the whole team and gets approved in a meeting with an editor-in-chief.
Baby books are no different from other book projects, editors and art directors are working to produce them, and there always must be a person making decisions, so yes, some kind of editor/director must have seen your book. 🙂 You might be personally communicating with an assistant, but it doesn't mean nobody else is supervising the project, they probably are.
As Ness said, if you have any question, do not be afraid to ask, it's absolutely OK. 🙂