Madame Fraya would use a person's hand and handwriting to predict his/her future, but she admitted to not following the principles of traditional chiromancy, and just making use of her instinctual knowledge.
She was subsequently called into the French Ministry of War, where she assured the government that the marching German troops would not reach Paris (they were in fact stopped at the First Battle of the Marne).
The abilities displayed by Fraya were studied by Alfred Binet, Eugéne Osty, and Albert von Schrenck-Notzing.
In December 1929, Antônio da Silva Mello attended a psychic reading session with Madame Fraya.
Mello noted that "the revelations obtained in my consultation with Madame Fraya were no more than vague generalities, which would be commonly applied to any person.