Crystal meth addiction?

A friend of mine has just told me that she has been using meth for 2-3 months. She says that she wants to stop and i believe her, however, she dose not want to resort to rehab yet. My question is is there anything she can do when she has an intense craving? Please just answer the question, i don’t need anyone telling me she needs rehab. i know that is a possibility but i want to a least give her a chance.