Vanessa would show up just at this very moment!

There is very little that Adam hates more than his sister poking her nose in where it's not wanted.

"It wasn't tame," he informs her. "It was quite, quite wild. I hoped it would tear you to bits."

He glances at the - the Homeward Bounders, all right - and says, without a jot of friendliness in his tone, "My sister. Vanessa."

If he's lucky they'll take a hint and keep their mouths shut.