Kathy O’Keefe, a Flower Mound resident who started a nonprofit to fight drug addiction, died on Tuesday morning after sudden complications related to liver cancer. “She passed peacefully with her son Kyle and myself by her side,” her husband Ben said in a statement shared by the nonprofit. “She was an incredible woman, wife, and mother and I will miss her greatly. I know there were so many people that she helped that will miss her as well.”