Harry Potter and the Half-Blood Prince
"Malfoy, revenge? What can he do about it?"
"That's my point, I don't know!" said Harry, frustrated. "But he's up to something and I think we should take it seriously. His father's a Death Eater and–" (7.8-9)
"You took that from Sirius's house," said Harry, who was almost nose to nose with Mundungus and was breathing in an unpleasant smell of tobacco and spirits. "That had the Black family crest on it."
"I – no – what – ?" spluttered Mundungus, who was slowly turning purple.
"What did you do, go back the night he died and strip the place?" snarled Harry. (12.78-80)
"She wouldn't even stay alive for her son?"
Dumbledore raised his eyebrows. "Could you possibly be feeling sorry for Lord Voldemort?"
"No," said Harry quickly, "but she had a choice, didn't she, not like my mother--"
"Your mother had a choice too," said Dumbledore gently. "Yes, Merope Riddle chose death in spite of a son who needed her, but do not judge her too harshly, Harry. She was greatly weakened by long suffering and she never had your mother's courage." (13.32-35)