Lizzie wasn't old enough yet to be ready for sneaking out in the middle of the night to meet her young lover. Even she was too innocent for those sorts of activities. Once Hermione was out of the back gate, she could see the young witch several meters ahead. She thought about calling out to the girl, but immediately decided against it. She might wake up some of the concerned villagers. How would it look? Lizzie appeared to be running away from crazy, dangerous Madam Dolohov. No one would believe that Hermione was chasing after the girl because she feared she might be in trouble. One of the villagers might curse first and ask questions second. It was a terrible idea.