Susan Ee's Penryn & the End of Days series is marketed as a Hunger Games readalike. There are similar elements--a skilled and seemingly fearless teen heroine with a younger sister to protect and an ineffectual mother. One book in, there's no Peeta vs. Gale dilemma, but I won't be surprised if one manifests. Or possibly the impossible/forbidden love trope will win the day.
The story: 17-year-old (I think) Penryn is trying to find her sister Paige, who was taken by angels, who in Susan Ee's world are total jerks who invaded earth, destroyed cities and now stealing wheelchair bound seven-year-olds in broad daylight. There's also some infighting that results in a dewinged angel named Raffe, who Penryn manages to rescue/kidnap, hoping he'll help her find Paige. Penryn and Raffe are combative in the beginning of their relationship, but come to bond out of respect for each other's skills and kindness, even if that kindness is self-motivated at first.
The first book isn't as much of a page-turner as The Hunger Games, but it's absorbing, and impressively brutal. There was talk of a movie adaptation in 2011/12, but I can't imagine how they'll translate some of this stuff to the screen. There's cannibalism and piles of naked dead kids. It's one thing to read that kind of thing, but something else to film it.
When you're small enough to have to look up at everyone around you, there's no such thing as a dirty fight.