About this scene
Pedestrian sidewalk, afternoon, busy retail block. She's wearing a coordinated pink outfit, head to toe, including the bag. Walks past the storefront where he is, normal speed. Ten feet down she stops, turns on the spot, and walks all the way back. Pass two she's significantly slower and her head has tilted half an inch toward him. She walks the same ten feet again, this time with deliberate steps, and stops at the storefront window to pretend to look at a display.
What to watch for
The pink coordination is the visual signature, but the walking pattern is the content. Pass one she does not look. Pass two she does. The pretend-display look at the storefront window lasts forty seconds. She is not actually looking at the display. The reflection in the window catches her eyes drifting to the right side, where he's standing, and they stay there. She does not approach. She just stands at the window.