She is also the mother of several of the Sirens , the divine handmaidens of Kore ( Persephone / Proserpina ) who were cursed by her mother , Demeter / Ceres , when they were unable to prevent the kidnapping of Kore ( Persephone / Proserpina ) by Hades / Pluto .
PRON AUX ADV DET NOUN ADP ADJ ADP DET PROPN , DET ADJ NOUN ADP PROPN ( PROPN SYM PROPN ) PRON AUX VERB ADP PRON NOUN , PROPN SYM PROPN , ADV PRON VERB ADJ PART VERB DET NOUN ADP PROPN ( PROPN SYM PROPN ) ADP PROPN SYM PROPN .