Karen was president of UUC fencing club from 1999 to 2003 when she completed her PhD. During that time she captained the Ladies epee team at various intervarsities and participated in the Winton Cup. The highlight of her fencing career at UUC was competing as part of the Five Nations Team in 2003.
Since leaving UUC she worked in Belfast producing 'The Little Book of Stuff' for young people. In September 2004 she moved to Switzerland and is currently working for Nestle and is project leader researching 'Health and Chocolate', while learning French, basketball and Via Ferrata (a sort of rock climbing using ladders).