What happens to someone if they had narcotics in the car with a 3 year old?

Someone told me that a friend of hers had narcotics (hard drugs) in the car with her 3 year old. She got into a car accident and totaled the car. She had narcotics and a pipe which the cops found. She was under the influence as well. The cops said she would be charged with DUI, child endangerment, narcotics possession as well. It's her first time with these charges. She was released from the hospital. She said she needed to wait 2 weeks for blood work to process to have a warrant issued for her arrest. And she couldn't turn herself in because the cops wouldn't arrest her. First question, is that a true statement? Will she have to wait 2 weeks before she gets arrested and or get the blood work? What can she do to take care of it ? And what charges /jail time is she facing? I can't see this being a slap on the wrist. I imagine it's A LOT of time. It's a bizarre case just looking for answers. Thank you.