She is at the lowest level. I guess she's the dungeon boss now. Just in case she actually gets defeated and respawns with her memories reset, she's preparing her next incarnation with a progress report of her yuri to ensure it continues where she left off...
That, or she believes transcribing her memories and leaving them in the store where things are perpetually restocked is the key to respawning with them intact. After all, restocking a handwritten book for which only one copy exists involves the author writing another copy - which is only possible if they're alive with their memories intact. Her diary only needs to be removed from the store and she'll be spawned in to rewrite it.