After her father's death in a bomb attack at the Grand Hotel in Brighton, she decides to focus her life on developing intercultural dialogue with people who perpetuate such attacks to understand them. In July 2003, she spoke at the St. Ethelberga Reconciliation and Peace Center, which was rebuilt after being destroyed by the IRA during the Bishopsgate bombing in 1993. She is invited to speak and animate workshops around the world for building peace and reconciliation.

Berry founded the charity Building Bridges for Peace on October 18, 2009. On Monday, March 21, 2011, Berry spoke at the Peace One Day conference in London, and on Wednesday, May 12, 2011, she spoke with Pat Magee, Archbishop Desmond Tutu and Mary Kayitesi Blewitt, who lost more than 50 family members in Rwandan genocide.