Elfi entered the TV business in 1989 as a writer and editor for RTL.
While at RTL Television, she developped a daily international scouting service.
In 2001, she joined BRAINPOOL TV and later that year she joined the Creative Unit
of Endemol International in Hilversum as International Program Expert.
In 2004, she went out on her own providing international programme research
to German production companies and serving as German Bureau Chief for
C21Media.net (London) until 2007.
In 2009, the TV Sisters wrote and edited on behalf of the Format Recognition and Protection Association the FRAPA Report 2009 - TV Formats to the World.