I think your set names are based on the file names (Melody1xx.jpg, Melody2xx.jpg etc.), but the problem there is that the filenames conflict with the site's own previews (post 1). My sets were found with random set names, which I changed to match the site's list.
As for the set length, the site previews indicate that the photoshoots were split into 2 sets each and released on the same day... for some reason. And yet, looking through set 001 for example, I can find the the preview photos listed for sets 1 and 2 in the same folder; likewise my set 003 contains the previews for both 003 and 004, and your set contains the previews for both 005 and 006. So, I'm going to go ahead and say that both of our sources took the common sense approach and combined the split photoshoots, which means that 1 and 2 were condensed to just 1; 3 and 4 became 2, 5 and 6 became 3, and my set 'presumed 7' is extremely likely both 7 and 8 combined, and renamed 4.
Oops, somehow I didn't notice you write pretty much the same thing.
Anyway, solution confirmed! Although, unfortunately that means that there is actually nothing more of hers to be found
Please see
this guide on requesting replacement links.
My password is always: Herc.for.onlyhot.net