"I wasn't trying to kill you. All I did was break the Cyber-connection, leaving your mind open." She begins to wig out, because of that goddamn human spirit thing no doubt. "Open, I think, for the first time in far too many years. So you can see. Just look at yourself. Look at what you've done." She starts hyperventilating like a hooker that didn't know her place and ended up turning into a giant robot. He apologizes, and she realizes what a dick she's been acting like, and then screams so loud that her Cybermen explode, and then she explodes, and then it's just a giant robot with nobody driving it, and it's about to fall on London and kill everybody, but then the Dalek thingy does something or another, and the robot disappears. The Doctor is sad, because that was dumb.
And the sad thing is, RTD and Gardner realizes later on that obviously Miss Hartigan -- in addition to making any sense whatsoever -- should have been the one to disappear the CyberKing somehow, herself, without any reference to the stupid Dalek thingies at all. That would have been great. Instead, we just have the Doctor giving this "I'm killing you for your own good" speech he's already given a million times, and a bad guy who was neither bad nor a guy, but somehow and for some dumb reason became both.
"I'd say he used that Dimension Vault to transfer the wreckage of the CyberKing into the Time Vortex, there to be harmlessly disintegrated," says Jackson Lake, the Victorian Age's answer to a question nobody asked. Then he jumps up on a lamppost and decides to make everything even stupider. "Ladies and gentlemen, I know that man! That Doctor on high. And I know that he has done this deed a thousand times! But not once, no sir, not once, not ever, has he ever been thanked! But no more! For I say to you, on this Christmas morn, Bravo, sir! Bravo!" They all cheer, and it's so fucking dumb I can't believe it. "Bravo! Bravo, sir! Bravo, Doctor."
The Doctor is stoic in his own little dreamworld of sadness and the humanity or whatever, and then finally hears them applauding, which makes him smile at wave at them, and it starts to snow. Needless to say, Jackson Lake is down there crying like a baby. And for my part, I have just fulfilled my promise to spit right on the floor.
Later, London is a mess due to being stomped on by a giant robot, but they're cleaning it up. Jackson calls himself "a widower, but with my son and with a good friend." Rosita... Oh, she doesn't matter anymore, I guess. "Frederic will need a nursemaid and I can think of none better!" Even the Doctor looks at him like, "I'm so sure." Jackson invites him to dinner with the family, at the Traveller's Halt. "A Christmas feast, in celebration." Jackson looks down, away, but stays present: "And in memory of those we have lost." The Doctor just looks at him, sad, because of all people Jackson Lake must know that he won't stay. "You know me," he says, and Jackson follows him saying, "I don't think anyone does." Not anymore.