Her mind turned back to Grimmauld Place and the reasons why they had been forced to go back and forth between the cottage and there constantly. They were planning. Dumbledore had every spare person there to assist in his battle strategy they were building around the notion the potion would do as it was supposed to. All the Dark Lord needed to do was inhale the vapours on a regular basis for a few weeks, and his magic would diminish and split itself from his very soul.