Is Mercurydust Molly's sister?

Yes According to the inquiry, the TV cat network shows.

1, Mercurydust is a character in Ye Luoli, a domestic animated fantasy. The character is Molly's sister, and they live alone. It is a saint fairy in Ye Wonderland, one of the top ten achievement methods, which appeared in 10 season.

2. Ye Luoli is a domestic 3D animation, which mainly tells the story of Queen mandola in Ye Luoli's Wonderland. Because human beings wantonly destroy the natural environment and threaten the survival of fairyland and the safety of fairies, Mantora decided to invade and rule the human world.