I am curious to know what this being's rank and power are...

[your_number_one_enemy666]

I've been visited more than once by a supposed demoness claiming that she was once known as Persephone, Demeter's daughter as I'm sure you all know. Anyway, I was just wondering if anyone knows what rank and what power she holds and if she is known by any other names. If anyone has any info, please let me know.