She lived in Saint-Tropez in the French Riviera in the early stages of her career and later settled nearby in Gassin.

Demongeot won her only WTA Tour singles title in Purchase in New York state in 1991.

Her best Grand Slam doubles performance was reaching the French Open quarter-finals with Nathalie Tauziat of France in 1987 and 1992.

In her 2007 book, Service volé, she accused her coach, Régis de Camaret, of rape and sexual abuse.

Although her own case was time-barred, she acted as a witness in the 2012 trial of de Camaret for offences against two young players.