Book to explain breathing/ calming techniques

[Toots38]

I need to help DD, age 5, to understand that she can control her breathing and can calm down if she concentrates. She keeps spiralling into panic breathing and getting really distressed. She has respiratory problems and has recently had a v traumatic PICU stay for this. I think now her anxiety is adding to her breathing problems. Any ideas? Any books that she and I can read together, exercises we can do?

This is a mindfulness book I dont know if it will help but it might.

Thanks I'll have a look at that.