In 1993, Mitchell attended the Foro de São Paulo in Havana as an observer from the CCDS. In 1994 she served as an official international observer of the first democratic elections in post-apartheid South Africa and was an observer at the congress of the South African Communist Party that year. Also in 1994, she visited Namibia as a guest of the mines and energy ministry. In recent years, she returned to Cuba for rehabilitation medical treatment following a stroke suffered in 2007.