An animation about White Fang's past that I posted on Patreon a few months ago. The actual gif can be seen on Twitter.
https://twitter.com/tenebscuro/status/1482670210154852354?s=21

[STORY]
She loses her mother, the only living relative, to persecution and is lured into a path of revenge by a Team Rocket executive who happens to be there. In the midst of grueling training and missions that cut down her body and soul, she rapidly grew into a fearsome assassin, driven by her desire to repay her master and take revenge on humans.

By the time she had become famous enough to terrorize the world, she was no longer that frail child who had vowed to avenge her mother. She indulged in making her prey experience fear and pain, creating more victims than just her targets.

It was ZOE who put an end to her insanity, as he realized the true emotions that were dormant within her and tried to arouse them. The mixture of her insanity and her sanity made her very upset and she tried to silence ZOE, the cause of her pain. ZOE confronted her herself and won the battle in a fierce battle.

She regained her senses and her time, which had stopped since her mother's death, began to move. She began to walk a new path with ZOE.

But it was a most horrible and excruciatingly painful path. The fact that she created so many victims will never go away. The bereaved families left behind will still have anger and resentment directed at her. She has to face that darkness…