In a deleted scene which is featured in the DVD, Miami reveals her real name as "Ellen".
When referring to poker players, the term "Tilt" means a state of emotional confusion sometimes brought on by unexpected or bad losses. This results in the player no longer being able to play well and often chasing their losses.
The origin of the poker term "on tilt" is possibly taken from mechanical pinball machines from the mid-to-late 20th century. Some machines had simple motion sensors. If a player tried to influence the ball's path by shaking or tilting the machine, then "Tilt" would light up on the cabinet, the flippers would stop working, and the player would lose the ball in play.