These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
First, Diana tries to make a run for it by leaving Sandy in a hotel room. She then notices his phone ringing and answers it, hearing his daughter's voice, and she breaks down in tears, knowing she can't go through with it.
The second happens when she reveals to Sandy that she doesn't even know her real name. She cries while telling him nobody gave a shit about her growing up. She then drops the tone and says she was lying, but chances are, she probably wasn't.
Sandy's overweight former boss is portrayed as a complete asshole.
Big Chuck is initially portrayed as a Nice Guy and a possible love interest for Diana. The last scene he appears in reveals that he is a racist bigot.
The drug dealers arguably avert this, as they are portrayed as attractive villains. However, they are also they only non-whites (bar Daniel and Detective Reilly) in the damn movie, which is another kettle of fish on its own.
Hell, Daniel himself is an ass for firing Sandy for a police mix-up (and, yes, he is fully aware it is a police mix-up). This also makes him an Ungrateful Bastard.