A hallucinogen. Most are dangerous. People abuse these to escape from what they perceive to be a painful reality, rationally or not.
No!!!
Yes. It harms the family and friends of the drug abuser. Also, if anyone looks up to that person, they could do the same thing.
by getting to a rehab
No, but she is a drug addict and animal abuser.
narc
Often the best thing to do with a drug abuser is an intervention where those that love him or her tell them how the addiction is affecting them. Counseling or halfway houses are an option as well.
Yes
disease of model of addiction
Please see the answer to "Characteristics of drug abuse in the workplace".
taking on more responsibility
The likely word is "hallucinates" (has delusions or fantasizes, as caused by drug or illness).
The likely word is "hallucinate" (have delusions or fantasizes, as caused by drug or illness).