She Pulls Her Sunglasses Down For A Proper Look
The classic sunglasses-pull-down move. Slid them to the tip of her nose, looked over the top of them, confirmed what she saw, and pushed them back up. All in about two seconds.
About this scene
Outdoor public space, weekend afternoon, planters and a fountain in the middle ground. She's in oversized sunglasses, walking past the bench where he's sitting. She catches the flash through the lenses and her brain immediately wants to verify it. She does not take the glasses off. She lowers them by half an inch with one finger on the bridge, looks once over the top, and pushes them back up. Then she keeps walking at her original speed.
What to watch for
The half-inch lower is precise. Most people who do this sort of double-take either remove the sunglasses or do not. She does the in-between version, which is more controlled. The look-over takes about a second. After she pushes them back up her stride does not change. She walks past at the same pace she was using before. About fifty feet down the path she pulls them off entirely to look back. He's still on the bench. She turns forward and keeps walking.