"You already know who I am, but perhaps you wish to know why I've been looking for you. Since that boy was killed, I realized that someone needed to keep the busybodies in check, especially you, Rose Weasley. I saw in his mind how much he loved you, and I was aware you would never rest until you uncovered the truth. Even if it meant meddling in affairs beyond your grasp, causing chaos in this poor, underprivileged neighborhood, where astoundingly skilled Wizards and Witches are forced to conceal themselves, out of fear and in the shadows, simply because individuals like you and your family are unwilling to acknowledge their right to devote their lives the most ancient and revered Arts. However, I have made things easier for you. I located your friend and led you to my shop, informing you of everything you required to know, all so that you may finally find tranquility. The only thing I anticipate in return is for you to never disturb us again. Seems reasonable, does it not, my dear?"