"Don't be ridiculous," she snaps. Of course, she thinks it's hers. She's second in command.
"It's true," says Homes. "He transferred the prime security clearance to her while he was dying. I saw it." (20.25-26)
Here Jackson demands the power that is rightfully hers, since she's the person who is "second in command." The Holo should have gone straight to her. But Boggs has outsmarted her. Katniss has control over the Holo until she releases it or until she dies – and she's determined not to give it to Jackson.