A child prodigy violinist, she would later join the New York Radical Women (NYRW) and co-founded the feminist guerrilla theater group W.I.T.C.H.

Her father, Marcel Remetier, a musician and linguist, met Florika's mother, Theodora Feiga in Soviet Ukraine, where they had both been deported in 1940.

[5][6][8] They eventually settled in Hartford, Connecticut after Florika was offered a full scholarship by the Hartt College of Music, where she studied the violin under Raphael Bronstein.

[2][9][10] She returned to Europe in 1958 to study the violin at the Paris Conservatoire with Nadia Boulanger, and made her London debut with the BBC Orchestra in 1959, playing several of her own compositions.

Florika appeared on several radio and television shows during her early years, usually as a violinist, for instance playing a duet with Sam Levenson on Two for the Money.

[12] On February 27, 1960, 14-year-old Florika appeared as a violinist on ATV's Saturday Night Spectacular with Jack Parnell, Petula Clark, and Guy Mitchell.

[15] As a member of the New York Radical Women (NYRW), Florika participated in the 1968 Miss America protest alongside Florynce Kennedy.

[18] In October 1968 - inspired by the outrageous acts of the Yippies - Florika and other members of the NYRW co-founded the feminist guerrilla theater group known as the "Women's International Terrorist Conspiracy from Hell", abbreviated as "W.I.T.C.H.

made its most notable appearance on Halloween 1968 when Florika, Peggy Dobbins, Susan Silverman, Judith Duffett, Ros Baxandall and Cynthia Funk marched down Wall Street dressed as witches to place a "hex" on New York City's financial district.