I'm not sure if this is exactly what you need, but I will post a few links that may lead you to come up with your own solution.
http://epubsecrets.com/why-i-use-page-list-and-how.php
http://epubsecrets.com/page-list-all...e-doing-it.php
The link to the script is dead, so I'm listing it from web archive:
http://web.archive.org/web/201912181...orohikoscripts
You can write directly to Laura, but I have a feeling you'd better check out the "EPUB Accessibility Using InDesign" video tutorial (available from Lynda.com or Linkedin), which AFAIK includes the PageStaker and EPUBOgrify script.
The latter is not so important anyway, because it is a simple change that can be done in Sigil.