This is a nice photography technique.
Pictures of a person in motion carry a unique message. When you told her to move her head here and there it was a nice move that communicated a detailed activity in one shot.
And the 1.5 seconds capture brought the face with all its versions. It must have been interesting.
The tunnel where these were taken is another classic venue.
The town also looks nice there.
Experiment with shutter times and different focal lengths. Try 1/4 of a second for example and shoot moving subjects.