Alyssa Marie Broderick was 17 when she was killed on April 18, 2021, in Austin, Texas. She died alongside her mother, Amanda Broderick, and Amanda’s boyfriend, Willie Simmons III, as they arrived for a supervised custody visit. The child of Stephen and Amanda Broderick was present and escaped to alert authorities.

Stephen Broderick, a former Travis County Sheriff’s Office detective and Alyssa’s adoptive father, had been accused of sexually and physically abusing Alyssa beginning in March 2020. In June 2020 Amanda took Alyssa to Dell Children’s Hospital for a Sexual Assault Forensic Exam, where evidence of trauma was found. Amanda filed for divorce and Stephen was indicted on 12 counts of physical and sexual abuse in November 2020; he was ordered to have no contact with Alyssa and to wear a GPS tracker but was released on bond.

On April 18, 2021 Stephen Broderick shot and killed Alyssa, Amanda, and Willie Simmons III at the custody drop-off. He was later arrested and charged with capital murder. For readers who knew Alyssa or have information about the abuse allegations or the custody visit that day, can you help fill in details that could matter to the case?