Tam and the Balloons

Tam has just found a huge bag of balloons.
She is so excited having all these, there's only one problem, she doesn't know how to do it.
Tam knows you need to blow into them, but nothing works.
People in the story try to help out but they all get it wrong!
That is, until she meets someone who can help her.
Can you guess who it is??
Read along with the book and find out who makes Tam really happy.