My question involves medical malpractice in the state of: NJ

http://www.anapolschwartz.com/practi...imitations.asp

"Adults - within 2 years of the time a person could or should have known that malpractice was committed;"

Scenario:

The granddaughter of a woman who passed in 1999 is suspicious of wrongful death given college education in the biological sciences. The immediate family is without this type of education.

Could a wrongful death suit be filed now? What are the obligations to file now?