Mr. Tidwell said 

They changed Harley's origin in the comic a while ago. She matches the current comic version.

Fwiw there's nothing feminist about the way they are portraying her if that helps. Lots of feminist critiques are complaining about the lack of autonomy and decision making in her origin story...

On the up side, maybe feminists can appreciate how Harley (Margot Robbie) has officially upstaged The Joker by having top billing on IMDB's Suicide Squad Credited cast, sorted by IMDb STARmeter:

http://www.imdb.com/title/tt13.....f_=nv_sr_1

Looks like a warrior in the new comics to me: