By Silas Allen Staff Writer sallen@oklahoman.comThe morning of Oct. 6, 2014, Megan Sibbett was about to pull out of the driveway of her Norman home and head to work when she heard something on the radio that made her stop. Sibbett, an English professor at the University of Oklahoma, spent the next few minutes sitting in the driveway, listening to the radio, before her partner, Annemarie Mulkey, came out of the house to find out why she hadn't left.