Twilight whined in the back of her throat, and begged her heart to slow down a little as she edged towards the door. She raised a hoof to knock, then froze as the humming within changed tempo, becoming even more upbeat. Twilight suddenly felt guilty for dragging her problems here and started to back away when Trixie ran up, knocked on the door, then jumped away again as she grinned at Twilight.