Olivia had seen no reason to evacuate the City. Back home her job would have been to stay there and take these things down, and just because she wasn't officially employed to do so here didn't mean that she couldn't do it anyways. She had taken it upon her to gather a lot of ammunition- enough to last the night. So she roamed the streets and buildings, killing the spawn she could find. Tops of buildings were the best spot to locate new targets and she learned quickly to look up as well as down for the things could fly. On one such adventure to the top of a building she spotted what appeared to be a kid fighting them in the sky. Olivia didn't even hesitate a moment to begin shooting at them, being careful to avoid the kid, and called out, "Hey! Come over here!" It didn't matter to her which group heard- she could better protect the kid if they were closer and would have an easier time killing the monsters if they got closer.