Proud Mary (2018)

Mary is a professional assassin who works for Benny, a ruthless gangster who heads an organized crime family in Boston. Her life gets completely turned around when she crosses paths with a 12-year-old boy named Danny during her latest hit. Mary's desire to save Danny from the streets and a sadistic drug dealer soon causes an all-out turf war that forces her to do what she does best -- and take down whoever stands in her way.