Hello I appreciate your concern for your friend Neck pain could be caused by number of reasons Cervical spondylitis or cervical spine related disorders Age related degenerative changes in neck bones ( so let me know what s her age) If MRI is normal than this could be due to muscle spasm may be produced by wrong posture or stressful working culture Another possibility is Sudden jerk or injury to cervical muscles I would advise her to consult a physiotherapist for exercises and interferential or infrared heat therapy Hope this helps her please revert back to me for more information I will be happy to help you Best wishes