I dont think this poor little child is on drugs, but in a bad environment with the obvious lack of good parenting around her.
It looks like she is playing with the girls making a silly face thats getting attention.
I think its a shame the teens have enough knowledge of drug terms to use them.
Why the baby is on the floor and the other passed while driving- goodness - it is sad.
And that whoever is eldest in the vehicle is tolerating such language/behavior.
Some people grow up in a rougher life than most of us know.
I hope they find help quick.