Help!

One night a girl named Jamie had a dream. She dreamed she was being chased
by a lion. Up ahead she saw a tree. She decided to climb up it to escape.
When she had almost reached the top she heard a hissing sound. She looked
up. It was a snake. THere she was trapped in the middle of the tree, with
a snake coming towards her an the lion at the bottom.

Question: How did she escape?

Answer: She woke up.