In many of the comics proper, she did kick Joker’s butt quite a few notable times. It’s always great to see.
The first time I ever saw this when I was younger was in the Gotham Adventures Comics, which were the comics of Batman: Gotham Adventures (the 4th season of Batman: The Animated Series that redesigned the cast and look of the show).
In issue #10, Joker hurt Harley’s pet hyenas after being his normal abusive jerk self to her. The lesson: Don’t mess with Harley’s babies or her or she will own you via concrete block, whether you’re Joker or not.
Nobody hurt her hyenas. Robin tied them up.
It’s from Secret Origins #04.
"The first person I ever revealed my identity to was Dick Grayson. He was about the same age I was when my parents were killed. His parents, circus acrobats - had been murdered. And I wanted to make a difference in his life the way, if my parents had lived, they would have made a difference in mine."