I've got two girls I can offer in terms of friendship. Hikaru's pretty much an energetic, enthusiastic, simple, honest derp with a fairly innocent personality and a very strong will. She likes cute things and is good with animals, so I imagine she and Rikku'd get along well. Then, I've got my FF babby, Valeria (when_turks_fly), who... is generally nice and pleasant. I imagine she'd get along well with Rikku, too, and she'd totally get behind the boarding house dealio. Let me know what you think!