She had been an accomplished Occlumens for five years. It had started as an attempt to help Harry and his connection with Voldemort but had quickly morphed into a personal fixation. It only took a few weeks of practising until Hermione realised that her talent was not just a result of effective study but natural aptitude. After a month, she was the strongest Occlumens in the Order. Years later, there was no rival for her skill in the wizarding world. Nothing could break her walls.