People with sleep problems sometimes resort to using substances like pot and alcohol in order to sleep better. However, pot and alcohol use are known to cause sleep problems. A viscious circle! As others said, a job or volunteer work can help structure her life right now. Sometimes a cure for sleeplessness is having a job that requires you to get up early. A couple of exhausting days can put you on a normal schedule. If not, there are non addictive options. Good luck.