Question

How does the grandmother spider help the twins escape from the giant

Answer 1

When the world was young, they say, a giant lived in the cliffs above Canon de Chelly. 
The food he lived on was human beings, and he caught the clouds and squeezed them
into his mouth for drink. The people called him Swallower of clouds, and the bravest 
of the men tried to destroy him. How ever, anyone who went out to kill the giant 
was never seen again. Before long, because he was swallowing all the clouds, the rain
no longer came from the west. Because he was shallowing all the clouds, the mist
above the mountains to the east disappeared. Because he was swallowing all the 
clouds, the springs to the south dried up. The crops dried up and died. The people 
were suffering and some began to die.