[MaiHikari]

Originally Posted by stray

Spoiler for Earrings:

Maybe Grace and TPTB gave Sheryl the earrings, telling them they were from her mother, because the experimenting with singing and fold waves with the Vajra dated back to the start of Sheryl's career (or Fairy-1). Of course, Sheryl doesn't have the added benefit of Vajra in her belly.

Spoiler for response to Sheryl's earrings:

I think they are from her "mother." Either Sara or Mao Nome whose DNA was used to create her.