She shreds Abby 's forensic report on Pablo Hernandez to prevent Gibbs ' arrest .
Their relationship improves by Season 10 and Vance plays a role in preventing Gibbs ' arrest and indictment by shredding Abby 's forensic report on Pablo Hernandez , whom Gibbs had shot and killed in revenge for the deaths of his wife and daughter .
Leroy Jethro Gibbs