Cindy Sandford

 Cindy Sandford was a neighbor and friend of Charles Duncan, and a survivor of the outbreak. Cindy had strong religious beliefs and a high moral compass. She often used her faith to comfort others in need. Cindy made the ultimate sacrifice by shooting a gas tank in a secluded room that she was in in order to kill all the zombies. Cindy was caught in the explosion and Charles was angered by her death.

Pre-Outbreak
Cindy and Charles were friends prior to the outbreak and Cindy often encouraged Charles to get out of the house. She finally got him to go to the city with him and have a few drinks at a casino-hotel, where the outbreak was suddenly unleashed.

The Outbreak (July 2009)
Cindy joined Charles' group. At the church, Cindy confessed that she believed this was all happening for a reason, but Sister Nancy took things to the next level by saying that this is the end of the world and his doing and they should accept it. After fleeing the church, Cindy often prayed for others in need or dying. She was a close friend and ally of Charles during her time in his group.

Following the separation of the groups, Cindy ended up with Ashley's group. Cindy recognized the bible phrase "Matthew 7:7" on the door leading to the Cradle underground bunker. In the bunker, its inhabidant Jack Terrier let loose a number of zombies. Cindy was attacked by them and in an attempt to stop the zombies, Cindy shot a gas tank and blew it up. This explosion killed all the zombies, and killed her as well. Everyone else survived the explosion and Cindy was remembered as a hero for saving them.

Trivia

 * Creator Johno admitted that Cindy was intended to be one of the survivors that would escape Las Vegas alive, but due to massive critical backlash toward her character, Johno decided to kill off Cindy and replace her with another survivor who was originally intended to die. This survivor that received a "saving grace" will be revealed after the finale airs.