"The Horcrux acts as a receptacle to hide and protect a fragment of a wizard's soul for the purpose of attaining immortality, so long as the fragment of soul remains unharmed. They can be inanimate or live objects."

She pauses after her reiteration. It's almost an automatic reflex, to describe exactly what she learned.

"... we've been looking for them," she continues, completely honest - because, really. What's the point in trying to hide things from the man who used them himself?