Who said "You should have ended this when you had the chance."?

This quote is attributed to Wanda Maximoff (Age of Ultron).

You should have ended this when you had the chance. - Wanda Maximoff (Age of Ultron)

"You should have ended this when you had the chance."

Wanda Maximoff (Age of Ultron)

"I can feel you dying. I can taste the breast milk on your lips."

"You two and your little lives. So desperate to be saved."

"I've been in people's heads. I know how they think, what they want."

"They're all puppets tangled in strings."