The Cry of the Children

How is Elizabeth Barrett Browning's "The Cry of the Children".a response to conditions like those in the evidence given before the Sadler Commission? How does she portray the effects of industrial labor on children? Who was the audience for this poem, and how might it have influenced public opinion?
https://www.bl.uk/collection-items/elizabeth-barrett-brownings-the-cry-of-the-children-as-first-published-in-blackwoods-edinburgh-magazine
https://victorianweb.org/history/workers1.html