The quick, thoughtless defense of her brother said much. Jaina couldn't remember his betrayal, and had no knowledge of Caedus. While he could understand why her brother would negelct to tell her these things, Anakin couldn't do the same. Caedus was a threat, and an intelligent one. He would try to exploit Jaina's vulnerability. Vader would have.
But first, Anakin needed her to remember the bond they had shared, and he gave her a smile. "She's been hurt badly," he agreed, "but with some attention and hard work, she'll fly true again." He tilted his head towards her. "I had some thoughts on how to streamline the fuselage. Before, it would have required some major overhauling, but I think now would be the right time to implement those ideas. It would also help to break down the ship's heat signature, so you wouldn't need as much power devoted to the secondary cooling vents to hide it."