Long ago her mother told her how it would be: "When a witch grows old she begins to fade; her power fails and she no longer has a purpose for being."
"What happens to her, Mama?"
"She--she just goes away."
"Where does she go?"
"Why, she just goes away--so completely that it is like she never existed at all."
And now that it was her time to go, she knew completely how right her mother had been.