She has always been a leader in old town to the girls of Old Town. When she got taken prisoner she bit a chunk out of Becky's neck for betraying her and the girls. When she was rescued by Dwight she was standing by him and pulled out some of his guns and began firing away. They set up an ambush for the enemy in an alley way. All the girls of Old Town were on the roofs and fired down on the enemy. After it was all over Gail kissed Dwight and he said "I will always love you baby" and she said "Always and never".
Gail was portrayed by Rosario Dawson in the Sin City movie.