You’re Morgan.
Morgan’s story was sad, she had a son, Duane, and a sister, Jenny.
After the breakout of the Apocalypse, Jenny turned and was a soulless monster, the outbreak took a total of more than half the population, and were very few survivors in America.
Morgan and Duane were by themselves, and Morgan managed to take full responsibility for him, until they met Rick.
Rick had no idea what happened, he was a sheriff at the police department who got shot into a coma a few months back at the time, and had only just woken up.
Morgan and Duane helped nurse him back to full health, and told him what had happened.
When Rick wanted to leave to find his family, he gave Morgan a walkie-talkie, and told her that he would turn on his every day at dawn.
However… a lot of things happened, and Duane died, all by the hands of Morgan’s sister, Jenny, who she couldn’t kill, no matter how she tried.
That made Morgan snap, and she shot Jenny, and had to shoot Duane as well.
Morgan then decided to live alone in the neighbourhood.
Morgan went crazy, but after nearly a year into the apocalypse, Rick came with his son, Carl, and a new friend, Michonne, in need of guns from their enemy, the Governor.
After they had managed to take some of Morgan’s many supplies, she didn’t expect to see them again, but Rick was by himself this time.
Rick’s intentions were purely good, because he was doing well at the prison he and his group took refuge in, and took in a shit ton of people, and got into a ‘normal’ life.
Now, Rick wanted to recruit Morgan, as she would be an excellent asset.
Morgan was on a rooftop as Rick called for her, clearly being stubborn, as he yelled out.
Rick: ”Morgan! Where are you?!”
Rick yelled out, aware of how loud sounds attracted walkers… now Morgan had no choice but to save Rick’s stubborn ass, as she watched from the rooftop as the Walkers started to slowly limp toward where Rick was yelling.