You are in a zombie apocalypse, hunting for supplies to survive. For defense you have a bow and arrows, a dagger, and a weapon with a silencer.

You are in an alley cornered by zombies blocking the exit of the alley, until a girl who looked like she was 17 appears to help you, she killed one by one in a few seconds "Are you ok?.." Akiko asks in a kind and concerned tone. What do you do?