In pictures: E Timor's angel of mercy

Since East Timor's independence in 2002, factional fighting has wracked the country and driven thousands from their homes.

Many have fled to Sister Guillermina's convent in Dili.

Sister Guillermina is a university lecturer, but spends much of her time running the camp for people sheltered in the Canossian Sisters of Charity convent.

Tom Greenwood photographed and interviewed the nun known for rescuing people caught up in fighting and stepping in to reason with violent gang members.