How will this go? Levi x reader

Y/n is older then Eren, Mikasa, and Armin and would babysit then when they were little until Wall Maria came down and they head into Wall Rose. Y/n decided that she will become one of scouts and join the survey corps so she can protect the only people she's considered family. But once she finally makes it and was chosen to be on Captain Levi's squad her life changed dramatically and she can't tell if it's good or bad.