It's just honesty... I'm also coming to like Rien. At first she seemed a little too jumpy and mousy--but damn girl! Perceval is, of course (again, it seems to me) overly noble, but Rien's got the kind of sense and natural suspicion--I'm up to the part when they find Bene--that I love.
Also, nice choice in names. Doesn't Rien mean 'nothing' in French? And Benedick sounds like it comes from the Italian "benedetto" for blessing. Or maybe he just has a "good dick".
But Perceval and Tristen? This book *is* a medieval-style quest, innit? ;P