Bruce Wayne older sister
Oc/Reader Is Bruce Wayne's Older Sister.
She is Older By 5 Years.
In this instead Of Bruce Watching His Parents Get Killed it was Reader/Oc.
She had Begged her Father And mother to Go watch an M Rated movie as all her friends had seen it.
Bruce couldn't come because he was only 8.
So he stayed home with Alfred.
(Everything else was the same except She tried to Call the Cops and The Mugger saw that and Punched her and then made her watch as he killed her parents before he knocked her out OR you can choose something different)
The Trauma effected her And what made it worse was that Bruce Blamed Her for their parents deaths.
As he thinks if she didnt try to call the police they would still be alive.
She Fakes her death and Runs away OR just leaves Gotham.
Traveling all over the world training to become The protector of Gotham.
Bruce became A playboy and Party animal, Taking drugs, Drinking, sleeping with every woman he could and Spending his money Recklessly.
She and Bruce never talk again. And then Bruce dies from an Overdose. ( You can choose different)
When Oc/Reader comes home She uses a Property She inherited that Bruce doesn't know about.
When she First starts Patrolling The suit she wears Had so much armour and padding that it Binded her Breasts.
Making all the Criminals, Cops and everybody else think The Shadow was a Man.
She becomes batman and uses the bat symbol as she remembers always liking bats and trying to help Bruce to get over his fear of Bats. (Or something like that)
She is Brutal But she always make sure that the people she Fights will live. She knows exactly where to damage without killing them.
They might be in agony for the rest of their lives but they will live.
All the batkids appearing are the same except Damian He was born because
Talbot (Male Talia Al Ghoul) Drugged Her and then stole some of her eggs.
She has very good relationships with her sons and Daughters.
They call her Versions Of Mother, Including Ma, Mom, mama and more.
Damian gets his love for animals from Her.
She ever let her kids have their pets if they wanted them.
When Jason was killed she almost Killed Joker But She was stopped by Gordan.
A video of her almost killing the joker with her bare hands when viral.
And now most Villains know what will happen if you kill or try to kill the bats kids.
When Jason is Revived he finds the video. And since he has a better Relationship with Oc/Reader he doesn't do the Kill the joker or I kill you.