I understand this must be difficult for you as a parent.
You must explain calmly the massive problems of this and the devastating impact of it on heath and wellbeing. Watch TEd talks and Islamic talks on this together. Take her to a cemetery and explain to her death and afterlife. She needs to understand how negative it is. Be patient and don’t lose hope. You can watch this clip too
https://youtu.be/4ErJBv70VHU