In 1965, she received national media and federal attention during the Vietnam War when her husband, Gustav Crane Hertz, was kidnapped by Viet Cong guerrillas in Saigon.

[5] The pace of the search for Gustav was forcibly sped up 40 hours after his disappearance, when Presidential Assistant McGeorge Bundy had arrived in Saigon for an inspection visit.

The second letter was written in Vietnamese, and was signed by a man who revealed himself as a representative of the Viet Cong in the village of Thu Duc, which was located five miles north of Saigon.

Hertz returned to Leesburg, Virginia with her children in March, so that closer proximity to Washington D.C. would allow her to apply pressure to the State Department and White House for Gustav's release.

[5] Meanwhile, several U.S. government attempts were made for the release of her husband, and an unsuccessful prisoner exchange led by then-Senator Robert F. Kennedy.

Kennedy referred the prisoner swap proposal to the White House, who rejected it on the grounds that a civilian was not of equal value as a convicted terrorist and that the U.S. should not negotiate with the Viet Cong in such a fashion, among other reasons.

The Hertz family was bewildered and angered at the White House's rejection of the deal, with Solange stating that her husband was being sacrificed to "maintain the fake image that the U.S. had absolutely nothing to do with the politics and government of South Vietnam.

In July 1966, Sihanouk provided a letter to Abba Scwartz, a lawyer working on the case, stating that Hertz was being treated "humanely" and was in "rather good health.

Some of the Hertz family clutched at hope for a short time after this radio message, as the surname 'Hertz' had been incorrectly pronounced, leading them to believe he may still be alive.

Shortly after the radio broadcast, Solange Hertz was informed through intermediaries that Gustav had not been executed, but actually had died of malaria in a North Vietnamese prison.

Three decades later, a long search for his remains by the State Department concluded following a successful DNA match, due in part to the lobbying of Burke Hertz.

Her work was featured in several local publications, including the Loudoun Times-Mirror, the Washington Evening Star, Antiques magazine and others.

[8] Hertz's work defended traditional Catholic views on family and the Tridentine mass; often attacking Feminism, Americanism, Scientism, & Freemasonry.

"[11] Hertz was opposed to both artificial contraception, which the Catholic Church considers "intrinsically evil",[12] and Natural Family Planning, which it deems permissible in limited circumstances.

[13] Hertz wrote that "the abomination of desolation is contraception…particularly as practiced by His own people in the guise of so-called "natural family planning"...Standing poised in the holy place to destroy souls and bodies at the very source of life in the Christian family, contraception is proving to be the apex and consummation of that old Master heresy from which all Christian heresies have derived.

"[14] Hertz also asserted that Jesus and the Virgin Mary did not ever possess nocturnal emissions or menstruation, respectively, due to the fact that both are a result of Original Sin.

She argues that had humanity remained in "perfect harmony with God's designs", then people "would not require the physical relief of periodic discharges to correct imbalances.

[16] Hertz's view was that a woman's role as a housewife and mother did not make her inferior to men, but significant and equal in her own unique right.

In her article The Housewife as Guerilla, she wrote that women's liberationists were cowardly and that "A real woman wants man’s role in society as she wants hair on her face.

"[19] Herz wrote that monarchy was "the only form of government formally and positively sanctioned in Scripture and Tradition” and consonant with the "very order of Persons in the Most Blessed Trinity, where God the Father is Source of both the Son and the Holy Spirit.”[20][21] Hertz was critical towards the French Revolution, stating its effect must not be minimized.

"[25] She also identified gluttony as closely related to sexual lust, observing that both possess "a specific, intense pleasure attached to it which is ordered to the preservation of life".