Link to summary of clergy reporting laws by state (US Dep't of Health and Human Services--PDF file).
I believe the oldest daughter was telling on the father (to the elders) the entire year
In California (and many other states) the clergy privilege is limited to "pastoral communications". Communications including victims, witnesses and other third parties may not be considered to be "pastoral" and not exempt from the reporting requirement. To know if that applies to the elders' contact with the daughter, you would need the advice of an attorney familiar with the law, especially how the courts interpret what is (and is not) pastoral communications.