A friend of mine is a long term methamphetamine user. how does she rehab at home? (she's more willing to do this then inpatient treatment.)

Outpatient rehab: I would strongly advise your friend to enter a rehab program. She could look for outpatient rehab programs in her area, as well as attend Narcotics Anonymous. An inpatient program may result in greater success with a lower chance of relapse. This needs to be taken very seriously.

Any step: Narcotics anonymous or some other peer support group. Be there for your friend. She'll also need a counselor who's a recovered user and can see through what the drug has done to her. I am so glad she wants to rehab, and that she has you as a friend.