Some of those family dynamics emerged last week in an investigative story in the Dallas Morning-News that chronicled what it called a history of abuse allegations in the Said family, many of them tied to clashes between the girls' Western culture and the strict Middle Eastern culture that Yaser Abdel Said grew up in.
Yaser Abdel Said, who immigrated to the United State in 1983 and was granted citizenship in 1997, reportedly traveled to Egypt often before the shooting.
The allegations began in 1998, when the girls, still children, accused their father of sexual abuse in Hill County, Texas, according to the Morning-News account. Patricia Said reportedly signed an affidavit swearing the allegations were true, but the charges were later dropped after the girls recanted and said they had made up the story because they wanted to live with their grandmother.
Connie Moggio, Patricia Said's sister, told the Morning-News that her sister met Yaser Abdel Said when she was just 15 and that one time he had shot out the tires on her car to keep her home. Fellow students described their classmates arriving to school with injuries consistent with abuse, the paper reported. One student even described a story Amina Said had told him about her father walking into her bedroom waving a gun.
In December 2007, Yaser Abdel Said reported his two daughters and their mother missing to the Lewisville Police Department. According to a police report, the next day, Patricia Said called police to say that she and the two teens were safe but that "she was in great fear for her life" and that concern for their well-being prompted the three women to run. The missing persons' case was closed. "We were able to verify that their welfare was no longer in question, so we closed that report out," Capt. Keith Deaver, a spokesman for the Lewisville police, told ABC News.
The three reportedly returned to Lewisville on New Year's Eve, the day before the fatal shooting.
On a Facebook page devoted to the teens' memories, friends continue to post comments and images, some showing hallways at Lewisville High School plastered with tributes to the murdered classmates. A video has also been posted about women of Arab descent who are victims of violent crimes by men.
In Canada last year, religious tension may have played a role in the murder of Aqsa Parvez, a 16-year-old who police say was strangled by her father, Muhammad Parvez, also a cabdriver. Part of that dispute reportedly had to do with the teen's resistance to wearing a traditional "hijab" or a head scarf.
Authorities have an arrest warrant for Yaser Abdel Said on two capital murder charges and are now working with state and federal investigators to find him. A $10,000 reward was offered earlier this month for information leading to his indictment.
Yaser Abdel Said is described as 6 feet 2 inches tall, with black hair and brown eyes.