She has worked with the Mikaelsons (Klaus, Rebekah and Elijah) to protect her child from the diabolical witches and later the villainous delusional Esther Mikaelson.
Since she became a hybrid, she has had rage and depression and the only thing that could be her weakness was her love For her daughter.
She maintained a good relationship with the Mikaelson family, including a love-hate relationship with Klaus, a friendship with Rebekah and a romantic one with Elijah.
Hayley is portrayed by Phoebe Tonkin, who also portrays Cleo Sertori in H2O: Just Add Water and Faye Chamberlin in The Secret Circle.