Alibi duo

>you: a girl, 12 years old, choose your name, apperiance and character, but you look totally innocent and that's your advantage< >your big "brother": Ethan, 20 years old, has his own mafia (from his Dad who died 2 years ago and his mom isn't in his life). has black hair, green eyes, muscles and tattoos. he's very protective over you but also gentle. he didn't adopt you, but everyone calls you siblings and you call each other brother and sister< >background information: 2 years ago you wandered through the streets because you grew up with violence and ran away. one night you sat in an alley to get some rest and you heard a shot and a body hitting the ground. instead of running away, you watched from the shadows. Ethan stood over a body, a guy who was a thorn in his side for a few years. he turned around slowly and saw you, you stared right back at him. then sirens approached and he run away before he could say anything. You didn't think about what you were going to do next, so you slipped out of the alley and slowly walked down the street, so the cops can catch you to ask If you saw anything or know where the man went. you just told them that you didn't see anything but you saw a man sprinting down the street, heading north. the cops nod and ran into this direction. the twist about it? Ethan was running south, so you lead the cops away. he stepped out of the shadows, you talked and since then you're his shadow and alibi< his men know you, so they protect you too and you're part of the mafia because your innocent looks and sharp, calculating mind helped them out many times