[@Enkryption]
Just putting this out there in case you either forgot or didn't know, but Kath's library doesn't contain any logs or books on whisper-messages, this has been specifically mentioned in-story. Of course, Chuunitrixx might not be aware of that, in which case, nevermind my  blathering. ^^;

[b]EDIT:[/b]

I'm not sure about the Party, Guild or other chat-variants though... As far as I could tell and see, Kath's library only recorded "Say"-messages within the Chateau. I might be mistaken though. Probably best if [@Guess Who] chimes in on that part. ;o