my girlfriend has been secretly smoking meth behind my back. she was also using cocaine. last night i caught her in the act. she was on meth, cocaine, and xanex. now she has broken out in a rash all over her body. i have given her food, made her shower, and lots of water. i also gave her benedryl. nothing will get rid of this rash. its mainly on her knees and elbows but it is all over her body as well. how can i help her?