Sarah Jane breaks into the factory immediately by driving the bus into the wall and the Bane Mother is revealed . She explains that she made the Archetype with different people 's DNA and that the Archetype is the perfect human being . The Archetype uses an alien communicator Sarah Jane had been given , realizing that the signal would be strong enough to kill the Bane Mother , and Sarah Jane , Maria , and the Archetype escape as the factory explodes .