"What if, and this is mere just spitting ideas out, but what if something could take those drums from his mind? Do you think it would change him?" Caitlyn asks curiously not having any idea of how to take away the drums neither but she was curious to know if without the drums what the Master would be. Rose tilts her head curiously as he talked about the time vortex. She wondered where they could see that. She caresses the Doctor's hand with her own letting him know he wasn't alone in his decision not to kill someone who used to be his friend.