All4Spike, I found all of the extant Life in Sunnydale series
here. It only lists up until 15, but once you start scrolling through the stories you will find links at the bottom of the page for all 17 chapters. All of the links worked last night.
The Sandlot says that there are 22 chapters, but it ends at the same exact place as the end of the 17th "episode" at the link above. I think
The Sandlot counted some of her multi-chapter "episodes" as individual chapters.
The last episode of the series that I have any reference to anywhere on any of her sites or journals is
"Episode 17: Exes and Other Catastrophes" which is a huge multi-part story that took up 4 pages at
Missives From the Hellmouth.However, if you don't feel like scrolling through all the links I grabbed an RTF last night. It's unformatted as of yet but I inbox me your email address and I will be happy to send it to you.