Sandy Cadena believes her daughter Natasha took her own life earlier this month as part of an online trend called the "Blue Whale Challenge".
The family of Brandi Vela, the girl who committed suicide last month after years of cyber-bullying, have said that the bullying hasn't stopped with her death.
The death of 28-year-old Sandra Bland, who was found dead in her jail cell three days after being pulled over for failing to signal a lane change, has been pronounced a suicide by hanging according to the autopsy.