In 1985 Doris visited Honduras for the first time and had the opportunity to experience a night shift with two medical students at the University Hospital in Tegucigalpa. She was so shocked by what she experienced that night that she decided to help immediately. Eight years later she set up her own charity, the Medical Center La Ceiba charity, registered in the canton of Zurich and recognised by the Department for the Interior (EDI in Switzerland). In 1998 she began building a private hospital (Suizo Hospital) for disadvantaged people in La Ceiba, Honduras. The hospital was opened in June 2000.
Doris devoted her life to improving the lives of the disadvantaged and helpless who are unable to afford medical treatment, education or basic living costs. Honduras became her second home. She collected donations for her project tirelessly and made use of every journey to Switzerland to hunt for sponsors and find new supporters.