Changers by Eagle Bennett

After a life of abuse, Kena has finally escaped her brutal family and clan only to discover she shares blood with ancient legendary beasts of her world. Beasts thought to be no more than myth actually lived and propagated an entirely new race, half ancient, half person. Now Kena is desperately trying to build a new safe society for others like her, only to find her efforts hampered by enemies from without and within. But Kenas greatest enemy may prove to be herself.