I'm Worried About My Best Friend Who Is About To

I'm worried about my best friend who is about to pop any moment being 8 months pregnant 9 months almost 9 months pregnant we think she's dropping right now. she has a past drug use history and just recently with all the pressure of everything going on has speed and marijuana we are not only worried about the baby but we are worried that the baby will get taken living in Nevada how do we flush her system safely