Tory Foster

Regarding Battlestar Galactica, what adequate explanation can there be that Tory Foster, one of the five final cylons, is the only one not to have an interesting storyline in season four? Scratch that - not to have a storyline at all. She offed Cally and she has now spent the last few episodes doing nothing in particular except to utter the line "I wanted to ask him about that frakking song."