Random is very good actually, it means you don't have to follow any rules. I have to follow the fact that she's a long distant (to the point of not being reconized by a canon character's clan and possably having a crush. at the very least, on Kiba who shares a many times great grand parent with) By that she has to have some disiplins that Kiba would reconize as being very simlar to how he was raised... thus making her more boxed in.
Random makes a character not bound by the "rules" of having them related to a canon character. Though with you really having no boundries with a "random" character that may make it difficult to write about them or show their personality at times. But if you have an idea of the personality, things should fall into place easier.... I wonder if I'd ever be able to write about this girl... Hmm and your last comment almost makes me want to call her Chiri... though I think I might try something more akin to what was done with Kiba, his mother, and his sister. Naming her husky will be the real hard one especally since I'm tempted to call her something like Blizy... but that's to English(as in the language) for my liking