Hmmm you are so right that we don’t know the “hells” people right around us may be living in. It usually scares me to be around people on hard drugs like that. I think you did the best you could and tried to understand and to help. It sounds like it wasn’t clear what she needed and that given that, you can only help so far. It is more than most would do. to try. At least she got those short moments with you in the safety of your car where she wasn’t on the streets confronting whatever it is...

As for the ghost feelings afterward- it sounds like she was followed by many demons, haunted herself .. and you picked up on that. I find that, too, when I’m around people with erratic energy or they’re using drugs or have had horrible life circumstances, that unsettledness. It will pass and perhaps next time u will be a little more prepared, in some way, if another person crosses your path...