The most logical thing would be to send out the pages and return the extra pages to their original owners. This way, they can finish their book, [yes some pages will be the same] or they can make new pages themselves.
I would also put the question out to the whole group. See what the majority wants to do.
If you take option A, definitely email the no shows and tell them that they are out. It's been 6 days, but it's right after the holidays too. Maybe give them through the weekend.
Hope that helps a little.
Mo