[6] When she was two, she was betrothed to Frederick, the firstborn son of Count Hermann II of Celje, the powerful captain (governor) of Carniola and cousin of Queen Mary of Hungary, Charles's successor.

When Stephen's died in 1390, Elizabeth came under the tutelage of her uncle Ivan V of Frankopan, while her mother was forced into exile to the Windic March, a stronghold of the Celje dynasty.

Finally, the initial sum of money was cut in half, but Elizabeth was to receive the estate of Steničnjak in Slavonia, with the strategically important castle of Skrad, instead.

[14] Count Hermann bestowed the young couple with the castles of Samobor, Kostanjevica, Novo Mesto, Mehovo, and Krško, where they set residence.

The chronist Eberhard Windeck who claimed to have witnessed the fallout between the spouses, wrote that Elizabeth had been stabbed in her bed during the night, and that the evening before the murder she had expressed her fears to her entourage: "My lords and friends, what benefit will this reconciliation [with Frederick] bring?

[23] Elizabeth's death caused a rift in the already precarious alliance between the Houses of Celje and Frankopan who were competing for influence in Croatia and Slavonia.

[25] After the intervention of Frederick's brother-in-law Sigismund of Luxembourg, the dispute was to be settled by the Danish king Eric of Pomerania who enjoyed the trust of both parties.