Q. A 37-year-old female presents to the outpatient clinic with complaints of chronic constipation over the past six months. She reports having bowel movements only 2-3 times per week, and when she does have a movement, she describes them as hard and difficult to pass. She denies any blood in the stool. She also reports experiencing abdominal pain that is diffuse and crampy, which is partially relieved by defecation. This pain recurs irregularly and is sometimes associated with bloating and increased flatulence. Additionally, she mentions episodes of anxiety and disturbed sleep. She has no significant past medical history. On physical examination, her vital signs are within normal limits. Abdominal examination reveals mild generalized tenderness but no distension, rigidity, or palpable masses. Rectal examination is unremarkable, with no signs of fissures or hemorrhoids. The remainder of the exam is normal. Laboratory investigations show normal complete blood count, electrolyte levels, liver function, and thyroid function tests. The stool occult blood test is negative. A colonoscopy was performed due to her age and chronic symptoms, revealing no structural abnormalities. What is the most appropriate next step in managing this patient's symptoms?