Use "persephone's" in a sentence

1. It's about three months since I first noticed a radical change in Persephone's behaviour: She is always shouting and laughing at top voice, she is trying to be clever and expert in all subjects, she is constantly asking for favours: “Type these poems for me” … “Tell your mother to sew this skirt of mine” … “Will you paint this picture for me?” … “Go to that public service and ask this or that” and so on

2. The greatest mystery of all, Persephone's 21st birthday party yesterday: First of all, she didn't want me to come at the same time as her other friends