The three friends began partying with extra-pure heroin and Alpharetta police said the 20-year-old woman overdosed almost immediately. Her two “friends” spent next 10 hours waiting to see if she would wake up.After Chelsea Bennett was dead, 911 was called. Paramedics took the corpse of the Johns Creek woman to the hospital.That was in March. A murder indictment was returned this month. Her parents are demanding justice.“The news that her life was so tragically taken is heart-breaking,” the family said in a prepared statement Thursday. “Chelsea-Ivanna was a gracious gift and we cherished her.”On July 15 a Fulton County grand jury returned murder indictments against the man who is accused of selling the heroin and the man who is accused of injecting the woman with the drug.