A Liverpool teenager is being lauded for her quick thinking after she witnessed a “creepy looking man” approach a young schoolgirl, while claiming to be her “dad’s mate.” Emma Carlile, 15, was on her way home from Weatherhead High School when she saw the tall man approach the 11-year-old schoolgirl. Suspecting something was afoul, the teen decided to keep an eye on her. The younger girl told him she did not know him—though he insisted that he was her dad’s friend, that he knew her, and had even been to her house before. As she was wearing a coat, it was unclear what school she went to. She had on a Harry Potter backpack. The preteen looked scared, so Emma decided to step in, reported the Mirror. When the schoolgirl reached for her phone, the man was heard saying, “No you don’t need to ring anyone, you know who I am, …