The Shadow of The Bat (Batman fanfiction)

Gotham was a lost city. Its streets flooded with blood and crime, staining even the most innocent civilians with sin and desperation. No human being was able to save this corrupted city from its doom.
It was a fact that seemed inevitable.
Still there was one man, believing and proving the exact opposit. Impersonating humans yet simplest emotion, fear. The mysterious Batman seemed to manifest in front of the very eyes of criminals, consisting of darkness and making their worst nightmares become reality.
Guarding Gotham City he fights for the innocent, being a symbol of resistence. Waking the criminal puppetmasters from there relaxed slumber to fight him with burning determination, showing every inhabitant of Gotham that even those who threaten to be the most powerful, will never escape him.

Unknown to the Bat, he was being watched. Observed by a power feared all over the world. Sending a young woman, trained by the best and living to kill, to Gotham City. Assigening her to test Gothams protector. Fighting him and making him face situation that every normal human being would break at. Being influenced by her masters words and orders she pushes Gothams dark knight as far to the edge of breaking as she can, never doubting her masters intention until she met the Batman face to face.