"Nothing wrong with trying. First to figure out what the plan should be by figuring out what the Master is doing first." Rose said for that's how he usually came up with his brilliant ideas, after the bad guy said what he was going to do.
Caitlyn came up with a good lay out plan for what she would need, continuing sitting by Jack, sharing her body warmth with him and decided that she wouldn't focus on it right then. She had to focus on getting the immortal better.