"As you know, the plan did not come off. I ended up with you three rather than Mother. I was terrified that she would die in the battle, so I did the only thing I could think of - notify Voldemort that Harry Potter had escaped. I knew that if he found out Potter had left, he would abandon the fight. It wasn’t altruistic, I was just fighting for my own survival. We could work on our disappearance another day, so long as we survived to see it. 