A Columbia defendant is scheduled to appear for a show cause hearing in Boone County today. Makira M. Abbey will appear at 1:30 p.m. this afternoon for allegedly violating the terms of her supervised two year probation for her conviction on charges of misdemeanor assault or attempted assault in the third degree, resisting or interfering with an arrest and peace disturbance. Abbey was originally sentenced to 90 days in jail on each count, but execution of sentence was suspended provided she successfully completed a two year probation.