Rosalynn represented President Carter in meetings with domestic and foreign leaders, most notably as an envoy to Latin America in 1977. She purposely scheduled so as not to have meetings with any of the heads of state. President Carter said that while his wife had initially been met with hesitance as an American representative, "at the conclusion of those meetings, they now rely on her substantially to be sure that I understand the sensitivities of the people." Following the Latin America meetings, David Vidal observed, "Mrs. Carter has achieved a personal and diplomatic success that goes far beyond the modest expectations of both her foreign policy tutors at the State Department and her hosts." In a June 7, 1977 news conference, Carter stated that her meetings with Brazilian leaders included discussions on human rights and her wishes for Brazil to include itself among other countries seeking out a reduction in nuclear weapons via an international study. On December 30, 1977, Carter and National Security Advisor Zbigniew Brzezinski met with Stefan Wyszynski at the Cardinal's Warsaw residence. President Carter said the meeting was intended to display American "appreciation for the degree of freedom of worship in the country."  Carter led the American delegation to the May 1978 inauguration of Rodrigo Carazo Odio as President of Costa Rica. In August 1978, Rosalynn led the American delegation to the funeral of Pope Paul VI in Rome.  Rosalynn also led a delegation to Thailand in 1979 to address the problems of Cambodian and Laotian refugees. She examined camps where Cambodian refugees had fled to avoid the combat between the Vietnamese troops and the government of Pol Pot. Helping the refugees, particularly the children, became a special cause for her. She returned to the United States and played a prominent role in speeding up a large appeal for assistance after being affected by the suffering she witnessed during her visit. By the time she had returned, however, her husband met with families of the hostages in Iran. They were more concerned for what they needed to do to get them out over being worried about whether or not they would ever get out. Carter stated that she wanted to return to the US as quickly as possible to mobilize their forces to assist in calming the refugees' plight.

Answer this question "What did she do there?" by extracting the answer from the text above.
address the problems of Cambodian and Laotian refugees.