Which case was successfully used to acquit a woman who used force to protect herself from an aggressor, also known as "battered woman syndrome"?

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R. v. Lavallee is a landmark case in Canadian law where the Supreme Court of Canada recognized battered woman syndrome as a valid self-defense for women who kill their abusers in response to a prolonged period of domestic violence. This case significantly impacted the understanding and treatment of domestic abuse in legal contexts.

Which Case Was Successfully Used to Acquit a Woman Who