Depends on your character <g> Yes, that's very helpful, I know
But seriously... you know her best -- what kind of image does she want to project to the world? Why did she come up with a nick in the first place? Lots of women on the 'net take neutral nicks, so they're not overwhelmed by hoards of geeky guys... Does she have another strong interest? Like a Tolkein fan might pick an Elvish nick, for example. Whatever the nick is, she ought to have an explanation for it, something that fits her personality and history.
PJ