The actor made the pledge as she ended her marriage to Johnny Depp, saying she would split $7 million between the ACLU and a children's hospital. Depp's defamation case against Heard is ongoing.
Depp has testified that Heard severed his finger with a shattered vodka bottle. On Thursday, her attorney used Depp's own words to suggest he did it himself. Depp is suing Heard for defamation.