Police are still searching for suspects after a 13-year-old Edmonton girl died from her injuries after a "mysterious" assault on Friday, October 2.\nUPDATE: A "female youth" has been charged with second-degree murder in relation to the death of Sierra Chalifoux-Thompson.\nBEFORE: The teenager's family has identified the victim as Sierra Chalifoux-Thompson.\nA Facebook post on an account that reportedly belongs to the teen's grieving mother, Angela Chalifoux, said Sierra was strong, brave and had an incredibly big heart."She was more to me [than] just my daughter, she was also my best friend," said Chalifoux's post.\nEditor's Choice: Dr. Tam Says Thanksgiving Will Need 'Serious Planning' & Sharing Food Is A No-Go\n\n\n“\n\n\nShe was strong and brave.\n\n\nAngela Chalifoux\n\n\n\nAccording to a police release, officers received reports of an assault in the area of 75 Street and Mount Lawn Road NW at 11 p.m. on Friday, October 2.\nSierra was found with serious injuries and taken to the hospital, where she later died.\nNo one is in custody at this time and homicide investigators have turned to the public for answers.\nThe teen's uncle started a GoFundMe page to help pay for funeral costs and the family held a vigil for Sierra over the weekend. \nThe victim's aunt, Fran Chalifoux Tribe posted on Facebook that they hope more information will come forward.\n"Her life mattered to us, she is not a statistic. This was a brutal crime for no real reason," she said in the post.\nAnyone with information is now being asked to come forward to speak with Edmonton Police at 1-780-423-4567 or #377 from a mobile phone. \nPeople with information can also remain anonymous by calling Crime Stoppers at 1-800-222-8477.