The Doctor shook his head. "Bea wouldn't want that. I think, deep down, she resented you. All the talking I did."

Bea had good reason. He was shocked Martha got on so well with Rose. No bitterness, no anger, just understanding. Bea, however, wasn't as even-tempered as Martha. And the Doctor had never taken advantage of Martha, even when he could.

"And do you really think you'd want to help raise a Time Tot? I mean, really? Precocious as all get out, my race in their earliest years."