Okay, so, I started writing a new story today. It's kind of based off of a true story, although I combined a lot of my aunts' pasts into one, kind of. There's this girl, and she's seventeen and pregnant. Her boyfriend (the father) is really into weed and speed and sells drugs. They're incredibly poor. She's going to end up running away. That's really all I've decided on right now. But, I'm afraid that she's going to end up being a Mary-Sue because she has a bad life and everything, and I don't want it to seem like I'm only trying to make people feel bad for her. Any tips on how to keep her realistic?