Daughter of Poseidon (A Percy Jackson story)

I'm sure that you all know the story of Perseus (Percy) Jackson. Son of Poseidon, two time champion of the end of the world, Supreme Lord of the Bathroom, yadda, yadda, yadda. This is a story about Nymphadora (shout out to all Potterheads!), but you would be better off calling her Nymph. She is the demigod daughter of a mortal woman and Poseidon. She doesn't recall her mother and, obviously, she can't remember her father. She only remembers the streets of New York, scavenging to find food and a place to rest for the night. Weird things happen around her. Giant monster thingies attack while she's trying to swipe some cash, a demonic looking cheerleader tried to slice her head off while stealing, erm, shopping for clothes, this one time, all the mortals fell asleep and the faint sounds of yells and clashing metal sounding in the distance.
Now, she's 13 (all events are in an AU and I'm going to make this a year after the Titan War and Percy has not been abducted by Hera yet) and she needs some Sirius help (haha!).
She follows the whispers of the trees to a dark forest, seemingly in the middle of nowhere.
She bursts through the trees during the campfire and things spiral downhill from there. Where will Nymph, daughter of the mighty Poseidon find her story?