Sonya had to prevent herself from laughing at the scene, having cover her mouth with her gloved hand. Once she managed to get herself together, she banged on the glassy entrance to her cell, mainly to human personal's attention. For her to be smart (probably smarter than Sonic), she was under constant watch during the day. Now that it was night, it was their time to make it out alive, and out into the real world; where they both belong.