So, What's the Difference Between Batgirl and Batwoman?

The original Batgirl was named Betty Kane and was Batman's niece. A few years later, the team at DC Comics revamped the character, and gave the superhero alias to Barbara Gordon, the daughter of beloved Gotham police commissioner James Gordon. Batgirl graced the comics for over 20 years, but everything changed with the 1988 storyline "The Killing Joke". In the story arc, Barbara was shot by the Joker, and photos of her naked, injured body were used to torment her father. The incident left Barbara paraplegic and she disappeared from the comics. Three other women have worn the title of Batgirl: Helena Bertinelli, Cassandra Cain, and Stephanie Brown. But in 2011, DC Comics did a major reboot and brought back Gordon as Batgirl.