Back to the example at hand, this woman alone in her car at night in a rural/isolated area. This is a comparable situation as a baby gazelle separated from the herd and surrounded by lions. They really have no power to control the situation if the officers want to do whatever they want.
Anecdotally, a story we see on the news often enough to justify the nervousness. I had a distant family member, a step-uncle I think, when I was younger. He was a constable or something. He drove a cop car and had the uniform but my understanding was he just had a desk job. This was late 80s/early 90s, so different tech landscape and basically was no record of his behavior. But I guess after 50+ complaints, there was an investigation and he lost his job. Turned out he would perform traffic stops with his car, to only single female drivers, then would coerce them into a sexual act. Basically, give me a BJ and I won’t give you a ticket. I don’t know if it was fully consensual but I know back then it was just his word versus theirs and only when the volume of complaints was high enough his superiors decided to fire him. No criminal investigation, or I would say nothing more than just quietly letting him go. The family only found out because it ended with a divorce and my aunt and cousins had to live with the fallout from that. I think it was buried from the media but I was young so maybe it was public and I just don’t know. We were in a big city so it wasn’t big enough to be a tv news story.