I get the feeling she won't be the most important person in the universe a la Amy and Clara. Looks like they're consciously trying to go old-school with this companion. And by 'old school' I am of course referring to the first four years of Nu-Who. That's old enough to be old school now, right?

) but its way too early to tell if she'll be a good or bad companion. The clip didn't seem very well written. I'll wait and see how she works in an actual episode before forming an opinion.