She played Mia Toretto for the fourth time in "Fast & Furious 6" (2013), which follows the remaining wanted fugitives on the heist from "Fast Five". The film earned a worldwide total of US$789 million. Her last portrayal of Mia came in the next installment, "Furious 7" (2015), also the final film appearance of Walker, who died in a single-vehicle accident while filming only half-completed. After Walker's death, filming was delayed for script rewrites to the story arcs for both Walker and Brewster's characters, causing them to be retired. The highest-grossing film in the franchise, it grossed US$397.6 million worldwide during its opening weekend and US$1.5 billion worldwide. She next appeared in the independent action drama "American Heist" (2014), as the girlfriend of a man involved in a crime. It screened at the Toronto International Film Festival and premiered in a ten-theater run in North America. Brewster also played a young and flirtatious salesperson named Dusty in the dark comedy "Home Sweet Hell" (2015), released for VOD and selected theaters.