Persephone was possessive of her Santiago's memory. She believed that those memories were meant to be only cherished by her because no one could ever deserve his goodness and kind heart. Thus, she would never share him or his memories with anyone. Santiago was an integral part of her life. She could live him through his memories. And this tattoo was a tribute to the moments that she had spent with him.
She would never tell anyone that once upon a time a weak looking boy with the most warm pale blue eyes and a strong heart had made home inside her heart.
"You have my rings, don't you?" Persephone suddenly asked the Villain. She wanted to ask him about her rings for a long time but never dared to.
"I do," Santiago indifferently replied. It appeared as if the talk about Nico's ring wasn't affecting him at all. And why would it affect him?
"Can I have them?" Persephone asked him with a little hesitation.