I think the little doodad the daughter has in her hands could maybe be the little holding/charge case for the AirPod-type things she has in her ears. She has a smart watch on, so it’s possible the two gadgets are correlated. Perhaps she can’t get the AirPods to work.
What I find fascinating is that your candid subjects know that they will be riding long enough to pull out a project to do. So great that the younger woman is willing to pay attention to what the older one has to say. But then I'm assuming that. The younger woman could be showing the older one how to do it.
Great candid shot. The girl is wearing ear pods so maybe listening to something? But then the older woman also looks intrigued, so I think it will remain a mystery….