could be Oxy Contin as well, when I (unfortunately) was smoking Oxy Contin, it's the same deal, with the tin foil and the black crap all over hands and anything they touch after touching it. So sorry, hope you are able to talk with her and she'll be honest with you about what she's doing. Best wishes.
Hi~ She's smoking something. What you see on her hands is the black from the tin foil.
She sure isn't being careful. Maybe wants to be caught?? I don't know how old she is but it doesn't matter. What she's doing is very bad for her and she needs to be confronted and helped!!
Good luck with this...keep posting
Vicki