When she is the factory she interviews Mrs Wormwood . She asks her how she gained approval of her drink so quickly and why she was not able to analyze `` Bane '' , an ingredient only found in Bubble Shock . Sarah Jane , having overheard the girls making plans , follows them to the factory and interviews Mrs Wormwood , and how she was able to get approval for the drink so fast , and why the Bane , an ingredient unique to the drink , was `` resisting '' analysis , to which she is told that all that Bubble Shock !