Harley Quinn's age can vary depending on the specific storyline and interpretation. But typically, she's depicted as being in her late twenties or early thirties.
In the main DC Comics storyline, the Joker and Harley Quinn did not have any children. Their relationship was complex but didn't involve having a family together.
The emancipation of Harley Quinn has been depicted as a comic. It explores her character development and story in that medium. There are various storylines and art styles that contribute to the overall narrative.