Batman's boy-wonder sidekick Robin has had a tough time from superhero and comic book fans over the years. That's not without good reason - Batman isn't a 'real' superhero himself, and all Robin amounts to is a lesser Batman with an unfortunate line in annoying one-liners. He doesn't serve many purposes beyond giving Batman someone to rescue, and it wasn't a coincidence that the character was largely ignored in the Christopher Nolan film trilogy.
The female alternatives to Robin are far more interesting, but they don't tend to stick around very well. Both Carrie Kelly and Stephanie Brown have taken on the position of Bat Man's assistant, but moved on quite quickly. Kelly had to audition for the role before eventually being taken on as hired help, whereas Brown was once 'the Spoiler' before replacing Tim Drake as Robin. She and Bruce Wayne didn't see eye to eye, so she left to become Batgirl.