She was also Warner Bros. first choice to direct the Wonder Woman movie, so she’d be an obvious consideration for Batgirl.
The first name on the list has to be the most obvious choice.
Michelle MacLaren has directed numerous great episodes of television from shows like Game of Thrones and Breaking Bad.
From what we know, MacLaren leaving Wonder Woman was simply a case of having a different vision for the project, so if vision aligns better here, things could easily work out.