The action from the slain 10-year-old’s family followed a similar move Thursday from Emilia Marin, a Robb Elementary staffer who filed a petition to investigate Daniel Defense’s marketing to young people and for company officials to sit for a deposition. Marin, an after-school-program worker who has been employed by the district for about 25 years, had closed a door she had propped open after she saw Ramos heading toward the school, her attorney, Don Flanary, told the San Antonio Express-News. The door was supposed to lock, but it did not, he said — allowing the gunman to be able to enter the school.