Ugh...my wife is deathly afraid of flying. She is in Canada now and flying back to SFO next week. I hope she doesn't hear about this.
It’s possible to have a complete and rational understanding of the situation and still feel fear. That, at least, frequently happens to me.
Solution: sleeping pills, apparently, or generally anti-anxiety and good contact with flight staff (thus ability to find "safe feeling" seats). In the specific case.
I don't know if that sense of control is transferable, though; paranoid backseat drivers are still a thing.