The little runner in training that could...
Isabel is almost completely unaware of how small, meek, and fragile she's supposed to be. She is loud, thinks that she's funny, and holds grudges easily. She thinks that her half brother has some sort of chronic worrying disease that should be checked out immediately. She is strongly opinionated, and knows what she likes and does not like in all situations. She dislikes feeling out of control and though she naturally has a temper, is almost obsessive about controling herself and her emotions.
((will edit))
Isabel doesn't like to think about her life before she went to live with Ignacio and his mom. Her mom wasn't a good mom, wasn't even a good person. At the time she didn't understand, but once she was older, she pieced it together with her brother's help. Her mother sold drugs. Hard drugs that kept you hooked and destroyed your body. She remembered the night a skinny man, almost made only of bones, came and cut her on the face and beat up her mom and took the drugs she had been carrying. After that, her mom didn't take her out, just left her with a neighbor lady who was old and could barely look after herself. Until one day when her mom just didn't come home. A stranger came or her, took her to Ignacio's house.
Things were a lot better there. Even though kids were mean to her and this mom wasn't her mom, it didn't matter. Still, she wanted something more... well just something more. She she dragged her brother off to space with her. Dramatic, right?