Who said "It was not his fault, or so she reasoned."?

This quote is attributed to Briony Tallis.

It was not his fault, or so she reasoned. - Briony Tallis

"It was not his fault, or so she reasoned."

Briony Tallis Justice

Character in Atonement

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"Forgiveness was a luxury she could not afford."

"Writing was the only way to atone."

"She could not undo what she had done."

"Writing is the truth of the imagination."

"Justice must always prevail."

"You think I'm just some animal?"

"Fighting for what's right never gets easier."

"Justice is worth fighting for."