Caitlyn smiles glad to know that Jack was also trying to give her hope as well, wondering just what the plan was. She'd probably have to get ready for any eventuality. Not exactly easy, mind you but she'll do it.
Rose continued to follow the Doctor through the TARDIS. "Can I help?" She asked wanting to be of assistance to him. If she could help in even a small way, she'd feel useful and knowing that hiding the TARDIS would be a good idea so that the Master wouldn't be able to use her for whatever nefarious plot the psychopath had.