I feel for you. Your daughter's story seems similar to that of my stepdaughter. My stepdaughter is now 24, but looks much older than that. Years of "help" from family members did not stop her from using drugs. My experience is it is best to not provide a soft landing--no court costs or fees.
I hope you do what you can to take care of yourself. Your high blood pressure is scary. Think of the analogy of being on the airplane--you have to put on your own oxygen mask before you help somebody else put on theirs.