At Windsor this morning, crowds lined the streets to watch the Irish Guards pipe and drum their way into the castle grounds to change duties with the Welsh guards. It was business as usual. The palace says constitutionally the same is true for the senior royals, even if there is a temporary changing of the guard. The King is still holding audiences with dignitaries, but he has stepped back from public-facing engagements, and there is a sense of frailty in the royal household.
For now, she can expect public curiosity has been replaced with sympathy, but clearly there is a lot on Prince William's shoulders. He will want to spend as much time as possible with Catherine and their three children, and will be with them at least for the Easter break. But with his brother abroad and to some degree estranged, and his uncle Prince Andrew relieved of duties, there's a dwindling pool of royal big-hitters available to hold the fort.