Ad blocker interference detected!
Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers
Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.
Her appearance in that episode and her momentary appearances in several other episodes of Series 4 were part of the build-up to "Turn Left" & to the 2-part series finalé, "The Stolen Earth"/"Journey's End". Those cameos by her showed two things: 1) that she was trying to get in touch with the Doctor & 2) that (as the Doctor put it) "the walls of the universe are breaking down and that puts everything in danger -- everything!"