Yes it supports the thesis.
Since Demeter was the goddess of the seasons, basically, whenever Persephone was in the Underworld with Hades, it was winter. There was no autumn or fall in Ancient Greece. It was winter because Demeter was sad. Once Persephone returned, it would become summer and spring again because Demeter would rejoice.
It is a literary device that repeats the same words or phrases to make a point clear
What type of question is this sorry I don't know please write right question