Wikipedia Throat

 "Prior to the Watergate scandal, Felt had become estranged from Joan. They had been close during her childhood, but after she graduated from Stanford, she had gone to Chile under a Fulbright scholarship to continue her studies. 

While there, she became friends with Marxist revolutionary Andrés Pascal Allende, nephew of future president Salvador Allende. 

When she returned home, her political views had shifted to the extreme left, putting her in conflict with her conservative father.

She earned her master's degree in Spanish at Stanford, and then joined a hippie community in the Santa Cruz Mountains. Felt and his wife went to visit her once 

and were appalled at her counterculture lifestyle and use of drugs;

 he was reminded of members of the militant Weather Underground that the FBI had been persecutingprosecuting. 

Joan's friends were equally shocked that her father was an FBI agent. Following their visit, Joan terminated most contact with her parents

As a result, and combined with the fact that she did not follow the news, she was unaware of her father's legal problems arising from the Watergate scandal.

The stress of following her husband's career, which kept him away from home much of the time, resulted in Audrey suffering a nervous breakdown in 1954 while the family was living in Seattle. 

When Felt was put on trial in 1980, she attended the first day, but did not return, as she was unable to bear it. On July 20, 1984, she committed suicide using Felt's revolver.

 Felt and Mark Jr., an officer in the United States Air Force who flew Air Force Two for then-vice president George H. W. Bush, decided to keep this a secret

 and told Joan that her mother had died of a heart attack.

Joan did not learn the truth about her mother's suicide until 2001

Meanwhile, Joan had become an adherent of Adi Da, who had founded a new religious movement in San Francisco called Adidam, and she was living in Santa Rosa. She had borne three sons– Ludi (later Will), Rob, and Nick, the latter two from another Adidam devotee whom she never married –but her parents had only met Ludi during their visit in 1974.

 After Audrey's death, Felt began making yearly visits to see Joan and his grandsons, and they also came to visit him and his new girlfriend, who lived in the same apartment complex. In 1990 Felt permanently moved to Santa Rosa"  

https://en.wikipedia.org/wiki/Mark_Felt 

William Mark Felt Sr. (August 17, 1913 – December 18, 2008) was an American law enforcement officer who worked for the Federal Bureau of Investigation (FBI) from 1942 to 1973 and was known for his role in the Watergate scandal. Felt was an FBI special agent who eventually rose to the position of Deputy Director, the Bureau's second-highest-ranking post. Felt worked in several FBI field offices prior to his promotion to the Bureau's headquarters.

 In 1980, he was convicted

of having violated the civil rights of people 

 thought to be associated 

with members of the Weather Underground, 

by ordering FBI agents to break into their homes

 and search the premises

 as part of an attempt to prevent bombings.

 He was ordered to pay a fine, but was pardoned by President Ronald Reagan during his appeal.