Look up her other blog, Jacinda y [something]. It includes more personal details and the like about her, which might be useful.
I can't remember - does she have a facebook page as well?
Not that I know of.
Jacena i Nuinde, by the way, and it's the JF account here:
According to her profile, the last update there was November 19 last year, similar to this journal. She has a basic paid account there, but I don't know if that means anything, as you can buy those for life.
Grr, my ingenious idea yielded exactly zero information *again*.