The radical church group is well known for protesting at the funerals of U.S. military members, claiming troops are dying as a punishment for homosexuality in America.
According to a flyer, the group blames Edwards for dying while some of her children are minors and for the death of her son, Wade, in a car crash back in 1996.
Edwards, the estranged wife of former presidential candidate and North Carolina Senator John Edwards, died at her North Carolina home on Tuesday morning after a six-year battle with breast cancer.
Close family friend John Moylan, who formerly served as campaign advisor to John Edwards, said Edwards' two youngest children were with family, including their father.
A service will be held Saturday at 1 p.m. at Edenton Street United Methodist Church in Raleigh. The service is open to the public, while the burial will be private.
Edwards will be laid to rest near her son Wade.
Details of the funeral provided Thursday show that Cate Edwards, the eldest daughter, will offer her memories, along with two of her mother's longtime friends: Hargrave McElroy and Glenn Bergenfield. John Edwards is not scheduled to speak.
The Associated Press contributed to this report.