>>1741306 (lb)
Font in Q pic is Sans-Serif, AF1 is Serif (lb)
Pic related for 737-900
You are correct, that's nowhere near a drivers' seat window.
I like this approach - what else can we absolutely tell by FACT? Judging from lightened picture, the woman sitting in the passenger seat has shoulder-length hair.
FACTS OF Q PICTURE
Mercedes S.
United 737-900 Plane.
Woman with shoulder length hair in passenger seat. Sara Carter?
EXCELLENT analysis. One thing to mention is that the photo may not have been taken by Q - could have been a photo PROVIDED by the USSS.