How does Hannah Hurnard use imagery in Hinds' Feet on High Places?

Imagery:

"Opening the door, she went out into the darkness. A hundred Craven Fears lurking in the lonely street could not have deterred her at that moment, for the pain in her heart swallowed up fear and everything else and drove her forth. So in the dark hours, just before the dawn, Much-Afraid started off to look for the Shepherd."

"'Nothing my Father and I have made is ever wasted,' he said quietly, 'and the little wild flowers have a wonderful lesson to teach. They offer themselves so sweetly and confidently and willingly, even if it seems that there is no one to appreciate them. Just as though they sang a joyous little song to themselves, that it is so happy to love, even though one is not loved in return.'"