It's all AU.

Jo sat under a tree, playing with a toy that a robot in a shop had given her after she said "Good morning," to it. She'd said it mostly out of habit, but she figured it couldn't hurt to be polite to them. Besides, the Doctor talked to Bessie half the time and at least the robots could understand you when you asked for something.

She guessed it was a toy, anyway. It had looked like a cat when she'd gotten it, but when she'd thought of a dog, it'd turned into that. Since then, it had been a horse, a giraffe, an orange-striped zebra, and was now kind of a cross between an eagle and a lion. She frowned at it. There was a name for a thing like that, but she couldn't remember it.

"Do you know what this is?" she asked the first person who walked by.

The Master was sitting the in the library, reading War of the Worlds. Because it was amusing. 'Intellects vast and cool and unsympathetic' indeed.