Angelfall (Penryn and the End of Days, #1) - Susan Ee

Angels as the messengers from god and as awe-ful and awful as they are in accounts, and they're not fluffy but killers who are in a war they're not explaining with people who are caught in the crossfire, regarding normal humans as monkeys.  Before this Penryn had problems, a disabled sister and a mother with serious mental health issues are not to be sneezed at. When her wheelchair bound sister is stolen by an angel she goes on the hunt and when she comes across an angel bleeding from having his wings cut off she forces him to help her, he's intrigued, particularly when his swords doesn't reject her.

Interesting read, I'm curious where this is going to go.