A review of Speed of Life by J. M. Kelly

Amber and Crystal are twin sisters living on the poverty line who are determined to be the first people in their family to graduate from high school. An unexpected pregnancy threatens to derail their plan, but the sisters rally and commit to raising the baby together, taking turns watching their little girl when the other is working, and taking advantage of the school's daycare. Their future is set--getting an apartment away from their gambling addict mother and lethargic stepfather after graduation, working until Amber can take over their aunt's bar, and raising their daughter together. 

When Crystal is encouraged by some mentors to apply for college, she does so on the sly, knowing Amber will be hurt and horrified. College isn't part of the plan. 

The sisters' devotion to each other and this baby (that obviously one of them gave birth to, but they both unwaveringly claim as their own) is breathtaking. It also gives off an uneasy vibe--SURELY the other shoe must drop eventually--and when Crystal's desire to go to college comes to light, both sisters are left to face the truth about their daughter's conception, their limited options, and what family really means.