Flutterby™! : Friends who help friends with websites

Friends who help friends with websites: *Please* make a really obvious "this is how this site was created" file and put it somewhere that another friend can find it after your demise. I'm currently doing forensics, the original creator died, I have found the commercial template from which the site was created, *I* can edit the HTML, but even though the owner of the site remembers editing the text, we cannot figure out how that was happening. Their ancient Windows machine had a copy of the site, and Publii, but I'm trying to figure out how those things might be tied together, and I'm stymied.