Cry Wolf by Patricia Briggs

Anna never knew werewolves existed until the night she survived a violent attack…and became one herself. After three years at the bottom of the pack, she’d learned to keep her head down and never, ever trust dominant males.

Anna is moving in with Charles and learning what having a real pack is like. The mating bond just isn't connecting between her and Charles though because of what her old pack leader did to her. (rape and abuse) Since she's an Omega (basically a werewolf who transcends the dominant/submissive code as well as having the ability to soothe the inner wolf on others) the abuse hit her harder. There's also a rouge wolf on the loose and a sinister witch from a pack member's past.

This book was great! Likeable, well-developed characters in un-put-downable story. I definately want to read more in this series.