What metaphors are used in The Unexpected Mrs. Pollifax by Dorothy Gilman?

Example of Metaphor:

"She was not a woman of the world, nor was she even aware of General Perdido's kind of world, and although he did not want to be ungallant, she was an old woman with neither the stamina nor the nerves to withstand these ruthless people. He had unwittingly sent a lamb into a wolves' den, a fluffy, innocent, trusting white lamb, and the wolves would make short work of devouring his lamb...."