What you're asking for a Batgirl stand alone movie which this clearly wasn't meant to be. They did the character a favor by not making her just a plot device as the comic originally did.
Somehow you made her leaving about how she felt about batman which if you watched the movie wasn't the case. She quit being batgirl…

Did you even WATCH the movie? After the credits it shows her going to work as Oracle which they ADDED showing that she moved past the assault showing how strong she is. And yes. I'm going to assume you aren't a fan when you bitch about how Barbra is portrayed in a film version of a comic made in the 1980s that goes to…

You do realize this reinforces my statement that people are acting like children about this. If you want to see how it effects Barbra read the comics where it goes into more detail about how she overcomes what happens and becomes Oracle. But seeing as you're a feminazi who apparently doesn't read the comics but just…

Seriously, people are being such children when it comes to this.
In the comics Batman and Batgirl date at one point and it doesn't go well, there's PLENTY of stuff with Bruce sleeping with Talia or Catwoman, and even Barbra with Dick Greyson.
This movie was rated R from the start, no one complained when Harley fucked…