Disclaimer: I don't own Harry Potter or anything on the books
Prologue
The forest was dark with night and the moon was well up in the sky. A lone woman stood there, still as stone. The wind stirred her dark hair. She stared at the moon with her silver eyes. The town she lives in is London, England. The young woman changed into a black panther, so her hunt began.
She ran through the forest to the lake and her eyes caught a deer. Perfect prey on a perfect night of hunting. She crouched down and stalked it carefully to not scare it until she could kill it. Then the chase began, of course deer were never built to avoid panthers so the hunt was a success. Feeding on the carcass the huntress of the night thought a great deal.
I wish she thought That I could go places, but I may be discovered. I have no enemies, but I also have not one friend. At that with her meal finished she wandered into town. The humans are asleep at this time. Still she always listened for them, just in case.
The streets are always quiet at night. That's why she likes to stay, but there is always trouble and she would deal with it. She would never tell anyone even if she had to. The reason is that humans can't be trusted with such knowledge of her power. Not that the animagus never found anything like her, in fact, some alleys she explored had odd people in them.
The sun began to rise and that for her meant she must go. The panther snuck back to a small cottage far away. The door as usual was open. Walking in she changed back into a woman and went to get the little sleep she could before working the fields. Not being known to her or anyone, she will lose a great deal and gain something else.