O: in my view you assume too much about how you would react in her situation. They were kids when they got into it. Kids are easily manipulated into believing whatever. You and I (at that young age) included.
I think I have a pretty good idea how I would have reacted to their situation at whatever age, as I'm the one inside my head, and know how I've responded to life in general, from an early age on. I know my history, you don't.
At the very least, I have a much better idea of how I would have reacted than how you think I would have reacted. I can't say how you would have reacted Oliver, so please don't project your ideas about your reaction to what I would have done. Speak for yourself.
As far as mistrusting the police, assuming they did hear them come by.....well, I could see how they may have assumed the police were inept, and didn't follow through. However, thinking someone is inept isn't the same as mistrusting them.
Mistrusting as in now I'm out of the house, in the house across the street, with other people, but somehow because of the police I'm going to end up back in that house momentarily?
In fact in the 911 call, doesn't Amanda keep say "I need the police" and "I need them (the police) now before he gets back"?
Doesn't sound like mistrust to me.