SOUTH HOUSTON, TX --Sister Thanh Huong Do dedicated her life to helping young people and now, those students are without their mentor because of an accident investigators are calling criminal. It happened Sunday morning in the city of South Houston on Main and Minnesota. It was the young people she taught every week who were the first to learn the news Sunday morning. "They cried, a lot of them cried. They loved her very much, she was very close to the children," Father Joseph Vu said. Sister Do never arrived at the Education Center at Vietnamese Martyrs Church, where Vu says she led kids through the confirmation process. "I don't think anybody can take her now," he said. A cross marks where her car came to a stop Sunday morning. On Tuesday, investigators were at the intersection reconstructing the scene where they say 19-year-old Marcos Garza ran a stop sign and struck her, spinning her car around. He's accused of being drunk. "The families hold nothing against him," Vu said. "Whatever happens, God has a plan." Father Vu says Sister Do led thousands of kids through their religious upbringing and had an influence on countless adults who will never forget her. "Like the flowers in the garden, God picked her up at a time that most people need her and love her," he said. Garza is charged with intoxication assault. Prosecutors expect to upgrade those charges. A massive remembrance for Sister Do will be held Thursday.