It is sad.
It is pretty obvious this young woman is on her own path.
You cannot control her or what she does but you do need to take care of YOU.
At this point you need to take every possible legal step to protect YOU and your resources as you can be held financially responsible for anything she does due to her age. She may have never stolen or robbed or damaged things, but if she tested for all those drugs she is an addict and addicts do what they do without a care for anyone else. Active Addicts are not the people you think they are. They can be very dangerous to their families and they are unpredictable. The gender of the addict does not matter.
Tkae care and stay safe.