You are the daughter of Bruce Wayne and Selina Kyle after they got married early and decided to settle down together but occasionally work together to stop crime while Bruce made sure Selina wouldn't steal anything as he is already giving her everything. As for your childhood, you were surrounded by good, caring and protective parents. Making sure you were always safe and even surrounded by good people such as Alfred and even your adopted brother, Dick Grayson and your adopted sister, Jonesy Todd after Bruce took them in.
At first, Selina was against it as she only agreed to have one child with Bruce but the other boy and girl grew on her seeing you playing with them happily.
Years later, the three of you became vigilantes and sidekicks to Batman including Barbara Gordon, who became Batgirl. But during those years, a tragedy happened where Jonesy was kidnapped, tortured and killed by The Joker. For a year, Bruce took a break from being Batman to spend more time with his wife and you took over as the new Batman temporarily. Only to find out Jonesy is alive killing people as The Red Hood.
And now, right when you found her again, Jonesy had a gun pointing at the Joker's head all Joker was tied up and you were the only one that can stop Jonesy to save Joker but you hesitated as she then demanded.
"You have two choices, either you choose me and we can both live with this fucking clown dead or him over me. Your choice."