It's hard to fully develop this type of movie in around 1hr 30mins run time but this movie does a decent enough job. You can see the evolution of an abusive relationship and see how it can be easy to misjudge what's in front of you.

The one thing I would have wished took a bit longer was her to get out of the relationship. While some can get out quickly for most it takes time. I have no doubt that actually reading aloud signs of an abusive relationship can trigger a light bulb but it seems unrealistic that this was just so easy for the girl to say "yup we're done (when she meant it for real) and here's the reason why you're an abuser".

I think the movie does shed some light on the issue though. The girl had her family to watch over her in the sense that they were aware of when her phone was going off, could tell she was distant with her friends, but was still accountable for her well-being. An adult on the other hand would not necessarily have this making the abusive relationship that much more dangerous.