[Western Crossover] Evie the Little Madwoman

After the Dark Knights lost in the Main Universe, the drowned souls who had died unjustly used the last of their strength to hurl Evie out of the Main Universe. When Evie awoke, she had arrived in a completely new version of Gotham, where she met another Bat Family, another Justice League, and a whole new set of superheroes.

Evie was insane yet could somehow remain clear-headed. She became Gotham City's second Joker, and could even be said to be more terrifying than the Joker himself.

After forcibly bringing Evie home, Bruce realized that the girl seemed to be even more interested in him, and kept making unreasonable demands.

"Daddy, can I borrow the Batmobile?" Evie gazed at him expectantly.

"No."

"Then can I borrow Barry? I promise I won't break him!"

"No!"

"Then give me Cyborg's head."

"No!!"

"Then can I go to the Watchtower?"

"What do you want to go there for?"

"I want to see it."

That request wasn't too unreasonable. It wasn't good to keep her cooped up at home all day. Maybe... Wait, what was that green glow behind her?

"Hand over the Kryptonite!!!"

Just when Bruce was at his wit's end, the only person in the Bat Family who could keep Evie in line was...

"Be good. Come down and drink your warm milk, then go to bed." Jason held the glass of milk out to Evie.

"No! I'd rather die than drink it!" Evie squatted on the chandelier, glaring viciously at the milk in Jason's hand as if it were some kind of wild beast.

"If you don't come down and drink that milk right now, I'm not coming tomorrow!"

The next second, Evie jumped down from the chandelier, darted over to Jason, snatched the milk, and downed it in two or three gulps. Alfred, who had witnessed everything, said to Bruce, "It seems Miss Evie listens to Jason very well."

Bruce gave him a disapproving look.

I'm trying to write a dark story. It's also set in a parallel world and has little connection to my previous work. The only related extra is optional, and the main story will mention it.

Theme: Reforming a little lunatic.