I dropped the book long ago because it wasn't really explaining how she regained the use of her legs, which is important to me, not to mention Gail Simone not turning in her best effort....I'm guessing it has to do with Batman Incorporated and the file Bruce gave her in The Return. That isn't Gail Simone's best work at all. I was really looking forward to seeing Babs back as Batgirl but it was just meh.
Gail Simone jumped the shark awhile ago around the time of Brightest Day BoP.
DC needs to throw her off Batgirl pronto because it really is a terrible book.
Johns however has really improved dramatically on GL. The newest arc with the Indigos actually has peaked my interest.