Sometimes she 's pitiful to me; and then again I 've got to remember the fact that she 's a dangerous woman.

Goodness only knows what would happen to a person who fell into her clutches when she 's got one of those immortality streaks on." "One of those what ?" Harry looked up in surprise.
"Immortality.

That's why you 'll find her sneaking around graveyards at night, gathering herbs and taking them to that old house on the Georgeville Road, where she lives, and brewing them into some sort of concoction that she sprinkles on the graves.

She believes that it's a sure system of bringing immortality to a person.

Poison--that's about what it is." Harry shrugged his shoulders.
"Poison 's what she is!" he exclaimed.