You're not losing your mind, mate. I've been following reports from that region for the better part of two decades and rural Oklahoma keeps cropping up in the literature far more than most people realise. Something about the flatlands out there - wide sky, low population, minimal light pollution. Perfect conditions for extended observation.
What struck me reading your account was the hovering behaviour. That's consistent with what I documented back in 2009 out on the North York Moors, though obviously a different continent entirely. The way certain craft just hang there, almost like they're studying the geography, or us.
Can you describe the shape more precisely? Triangular, disc, something else? And did you notice any reaction from local animals beforehand - cattle, dogs, anything like that? Those details matter enormously when we're trying to build a coherent picture.
Also worth asking - did anyone come knocking afterward? Any unusual visitors, people asking questions who didn't quite seem right? That's the bit that always concerns me most with close range sightings.