When she appeared for battle against Platinum, Togekiss was seen and when the format on the screen to switch both trainers Pokémon explained by Dahlia too.
As they were switched, each trainers Pokémon were seen on the opposing side of the field. Platinum sent out Togekiss, but before it made a move, Dahlia had Platinum's Lopunny use Focus Blast, which caused it to faint.
When the battle had finished, Dahlia's Pokémon were seen smiling.
As a man was speaking to the robot Starley, he mentioned that the Battle Arcade was closed, to the shock of the robot Starley. He explained that because Platinum defeated her, she went training, with an image of her and her Pokémon.