Who said "She had written herself into a corner."?

This quote is attributed to Briony Tallis.

She had written herself into a corner. - Briony Tallis

"She had written herself into a corner."

Briony Tallis Creativity

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."

"When life gives you lemons, make something beautiful."

"Creativity knows no bounds."

"Creativity is the expression of the soul."

"I'm making this up as I go."