Yep. Using the 3G browser to read fic directly. Doesn't bother loading it onto the device itself as an ebook. If the Kindle let her download ebooks from AO3 & read them, she'd do so, but that's extra steps she generally doesn't care to bother with.

It's something the next generation of ebook readers is going to want--not just a web browser, but a download-and-read option, a way to get stable content onto the device without plugging into a computer, and without being limited to buying it from a single store.