In 1394, Helen agreed to Dabiša's decision to designate King Sigismund of Hungary as his heir. When Dabiša died on 8 September the following year, however, the leading noblemen – Grand Duke Hrvoje Vukčić Hrvatinić, Prince Pavao Radinović, Duke Sandalj Hranić and Juraj Radivojević – refused to honor the agreement Dabiša had made with Sigismund.
In 1394, Helen agreed to Dabiša's decision to designate King Sigismund of Hungary as his heir. When Dabiša died on 8 September the following year, however, the leading noblemen – Grand Duke Hrvoje Vukčić Hrvatinić, Prince Pavao Radinović, Duke Sandalj Hranić and Juraj Radivojević – disregarded the agreement Dabiša had made with Sigismund.