"I'm no mage, nor an expert on magic, I'm afraid. But I do know such things are rare, if not impossible."

There's a sympathetic furrow to her brow as she watches Hermione struggle with the idea. No one wanted to believe someone was beyond saving. That much she understood.

"It's a very circular argument, had often and at length. The danger blood magic poses needs to be guarded against, and restrictions are set in place to prevent it. Someone will invariably break the rules and prove the need for them, and so on and so on. So long as there are those who seek power and are willing to sacrifice others to feed that hunger? Where can it end?"