My girlfriend is suffering from recurring nightmares. how can she get rid of these?

Nightmare Disorder, : formerly "Dream Anxiety Disorder" = repeated nightmares that harmfully impact work, social or other functions. Anxiety is the most common cause, soon after an adverse major life event in 60% of cases. Other causes = medications, street drugs, xs alcohol intake, eating just before bed, sleep apnea, & sleep disorders. Her doctor can evaluate her & may refer her to a psychologist & a sleep lab.