Hannah loves her friend Isabel because Isabel is big like a grown-up but she plays with Hannah like a friend. Hannah loves Isabel because Isabel doesn't criticize. She's never in a hurry. She's always ready to play any game Hannah wants to play. And, unlike other grownups and some bigger kids, she doesn't tell Hannah what to do.
And Hannah's not the only one who thinks that Isabel is wonderful. On Isabel's birthday, everyone on Gold Street recognizes that Isabel is the neighborhood's real treasure.