score:16
It's a bit out of the box, but you might find a user on TaskRabbit willing to pick them up and take them on a train down to London for her, especially if she's willing to meet them at the train station in London. For the right fee, it's amazing what you'll find people doing on there, and it's not exactly complicated, especially if she covers their train fare.
Note that TaskRabbit vetts and background checks all users, and runs as a company providing a million dollars insurance guarantee on every task. It's much, much more than a 'man in a van' that seems to be her current concern.