[He ties the tie for her with the deftness of many, many years' experience, even if it's nothing something he habitually wears himself. And stands back with a proud smile when he's done.]
My pleasure, really. It's been nice seeing him again, even if he's not really here inside. And - you know - I'm glad he got you to look after his body. At least I know you're not going to do anything awful to it!
[Little bit hypocritical considering how eager he's been to advocate experimentation with other people's bodyies? Yes, but this is the Doctor! (At least, as far as he's aware.)]