Daughter of Poseidon

Katherine Stonehelm thought she was a normal girl.
That is, until an ogre threw her at a tree.
When she awakes she finds herself in a camp for half human, half gods. Demigods.
Just when she gets used to the idea of being one of them, Katherine discovers that she is like no other demigod that she'd ever met. As she and her friends catch themselves I'm the midst of a war, they must quest to find a way to put an end to the

And then the prophecy began.