Just a random thought.
They will eat you
Torn from my mother's breast.
This refers to plucking a fruit from the tree. Some trees produce a white milky sap while plucking the fruit. That refers mom child breast feed relation ship.
I have been imprisoned in a cave.
This refers to the process of riping fruits. People put fruits in a box with no sunlight or air to ripe it.
Why did they do this, and what will become of me?
They will eat you because they are hungry.