Lisa, who is 4 months pregnant, has contacted a social worker several times at the community health clinic to plan for the future of her child. During her last visit, she confided that she is addicted to heroin. The social worker has expressed his or her concern that the drug may harm her unborn child, but she does not seem worried and does not want to give up use of the drug. The social worker also knows that she obtains money for heroin through prostitution and is living on the street. Explain how Lisa's unborn child's rights supersede Lisa's right to confidentiality.