“She was upset about it because [William] was so upset.

Seeing her husband so distraught was tough.”

The holiday special will be airing on ITV1 in the United Kingdom on Christmas Eve, perPeople.

Prince William and Kate Middleton smiling at an event

“Just how much we need one another.

And how loving and feeling a sense of belonging to one another can provide comfort in tough times.

The importance of simply being together.”

Kate and William laughing