In 1959 Yeend sang her first Elisabeth in Wagner's "Tannhäuser" with Fort Worth Opera and portrayed her first Ariadne in Strauss's "Ariadne auf Naxos" at the Empire State Music Festival. She appeared at the Houston Grand Opera in 1960 for her first portrayal of the role of Sieglinde in Wagner's "Die Walküre" and that same year sang Abigaille in Verdi's "Nabucco" at the San Antonio Opera. In the summer of 1961 she portrayed Donna Anna in Mozart's "Don Giovanni" with the Zoo Opera in Cincinnati. Some of her other notable international appearances included Mimì in Bulawayo, Rhodesia, Violetta at the Bavarian State Opera, Eva at the Liceu, and the Israeli premiere of Verdi's "Requiem" in Tel Aviv with the Israel Philharmonic Orchestra (1954).