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. However, when Dabiša died in 1395, the leading nobles - Grand Duke Hrvoje Vukčić Hrvatinić, Prince Pavao Radinović, Duke Sandalj Hranić and Juraj Radivojević - refused to honor the agreement made by Dabiša with Sigismund.