What happened here? Georgia teen stabbed to death by cousin in front of her house after smoking pot: police BY MELANIE DOSTIS NEW YORK DAILY NEWS Updated: Monday, November 16, 2015, 5:34 PM Father of victim in Acworth fatal stabbing speaks WSBTV - Atlanta A Georgia high school student high on pot stabbed to death her teen cousin in her front yard during a weekend fight, police said. Abbey Hebert was found covered in stab wounds outside her Cobb County home just before 9 a.m. Saturday after a fight with her 18-year-old cousin, Olivia Smith, WGCL-TV reported. The two had a sleepover after an Allatoona High School football game Friday night and later went to Chick-fil-A near Hebert’s Acworth home, according to an arrest warrant. COBB COUNTY SHERIFF'S OFFICE Olivia Smith, 18, is charged with the murder of her 17-year-old cousin, Abbey Hebert. Enlarge ABBEY HEBERT/VIA FACEBOOK Hebert's body was found lying in front of her home in Georgia. Enlarge After smoking marijuana, the two had a fight and Smith pulled out a kitchen knife and stabbed her 17-year-old cousin, the accused killer told cops. Hebert fled but Smith gave chase, repeatedly stabbing the girl in the front yard as horrified witnesses looked on, Cobb County cops told the Atlanta Journal-Constitution. “The neighbors heard a lot,” Cobb County police Sgt. Dana Pierce told the newspaper. “There were a lot of things being yelled and hollered.” The teen admitted to cops that she killed her cousin. ABBEY HEBERT/VIA FACEBOOK Friends said Hebert and Smith were close friends. "I only had one child and that was Abbey and I don't know where to go from here," the girl’s father, Steve Hebert, toldWSB-TV. "I don't know what to say." Just two weeks ago, the cousins were tweeting loving messages at each other. “Love you sweet girl,” Smith tweeted. “Love you more than life,” Hebert wrote back. And, last week, Hebert tweeted at Smith asking her to come over. Friends told the station the two were very close friends. Police have not revealed a motive for the killing and Smith is being held without bail. On the first day back to school since Hebert’s life was cut short, students at Allatoona High School, where Hebert was a senior, wore black to remember their fellow classmate. WGCL A vigil for Hebert was held Sunday night at Allatoona High School, where she was a student-athlete. Friends also remembered her life with a vigil at the high school on Sunday, where they released balloons and paper lanterns. “There’s a lot of ugly people in this world that may deserve something like that, but not her,” Hebert’s former softball coach, Ray Mitchell told WGCL-TV.