Of course, Ritsuka didn't even notice his little prank setup, as it didn't occur to her that he'd intentionally sabotage things. It probably should have, but she was already preoccupied enough with trying to make sure she remembered how driving a horse-drawn cart is supposed to work. So needless to say, when the horses spook, she's caught entirely by surprise.

"Ah! Whoa, whoa!!" Was is she supposed to do? Pull back on the reins, is that it??