Such cases can often be tough to prove, Pescatore said.
"I'm doing it through their own words," she said of the Schaibles. "I don't know how else you would prove it unless you had an eyewitness."
There was at least one case in Philadelphia in which parents have been convicted of withholding medical care and the child did not die.
In 1998, Daniel and Anne Marie Foster, members of Faith Tabernacle in North Philadelphia - from which the Schaibles' First Century church split nearly nearly 90 years ago - were found guilty for not seeking treatment for their 2-year-old son's stomach tumor after an anonymous caller alerted the city Department of Human Services.
Outside Pennsylvania, there have several similar cases. In 2011, for instance, an Oregon faith-healing couple was found guilty of not getting treatment for a birthmark over the daughter's eye that developed into a condition known as hemangioma.
Dr. Paul Offit, chief of the Division of Infectious Diseases at Children's Hospital of Philadelphia, has argued that Pennsylvania's laws are too lax on the issue.
"In the state of Pennsylvania, there are religious exemptions to child abuse and neglect laws; we are backward in that sense," he told NBC10. "I think we need to eliminate those exemptions."