While on the server, hit escape and Save Character. This will export a file of your current character to your local vault (C:\Program Files (x86)\GOG.com\Neverwinter Nights Diamond Edition\localvault; or wherever your game is installed).
This file will be a .bic file, which can be opened with a text editor (I prefer
notepad++ for organizing sake). It will be named something like [firstnamelastname].bic.
Search your character's name and their in-game description should be right after it on the first search.
There's probably a program to sift through .bic files a bit easier, but I'm too lazy to look for it.