"Well, I don't know about that," the Doctor says, giving Morgana a cheeky smile. "But then again, I don't know her."

This is good. She's talking about her best friend, not at all focused on the Master or the things done to her. And, well, the Doctor still feels a lingering affection for Gwen from his connection to Morgana, so he can't really complain about hearing her talked about. It's about time he learned a bit about this woman he so blindly trusts.

"Who's Tom?"