Newly minted Queensland Minister for Child Safety Amanda Camm has responded to the criticism and questions about the state's child safety and youth justice systems.

This comes off the back of the death of 69-year-old grandmother Rosemary Franzidis, allegedly at the hands of a 16-year-old boy in a stolen car at Murrumba Downs last week.

Minister Camm told Bill McDonald on 4BC Mornings that tackling this issue will be "a big challenge," but insists she is up for the task.