Matilda sulks around the train station- very much not doing a good job at hiding the fact that she's leering at Four suspiciously. After her failed attempt at vanquishing Ten on the beach, she's not feeling very confident in any monster fighting. And maybe-- maybe a tiny bit of her is feeling outrageously left out and discouraged by that for participants deal. She could pay of course-- but why should she have to?

She can be found looming behind newsstands, phonebooths, and pillars of all kinds- suspiciously leering for a long time.

Then, at the opportune moment (right about when Four starts to lose their optimism) she bursts out from behind the newspaper stand she'd been 'hiding' behind. "Very suspicious!" she declares, pointing dramatically at Four.