[5] A show business journalist for a magazine in the 1970s, Kallen interviewed the Rolling Stones, Frank Sinatra, Elvis Presley and countless others.
She managed her first champion in 1991, James Toney knocking out Michael Nunn in eleven rounds to win the IBF world Middleweight title.
Kallen was diagnosed both with heart disease and cancer starting in the year 2000, but after multiple surgeries she recovered and is enjoying good health.
Kallen makes appearances nationwide as a motivational speaker and currently lives in the Detroit area and manages three professional boxers, including Mykquan Williams and Sam Rizzo.
In December 2021, it was announced that Kallen is producing The Legend of Jack and Diane, a feature film described as a female-led revenge thriller directed by Bruce Bellocchi and starring Tom Sizemore, Lydia Zelmac, David Tomlinson, Robert LaSardo, and Carlo Mendez.