Hi, Kat
Here's another book you might find of interest as a resource. "Writing Life Stories" by Bill Roorbach, published by Story Press, 1998 is subtitled "How to Make Memories in Memoirs, Ideas into Essays and Life into Literature."
It's full of good information about crafting creative non-fiction and has many helpful exercises. Worth looking up in the library )or at my favorite on-line used book source, Powell's). Even if you don't use it for your current project, it's a good reference work to remember for your next venture into the genre.