Who is Gloku from Waterlily and what is their importance? Nymphaeaceae English & Literature Gloku | Waterlily

Gloku is Waterlily's grandmother and is Rainbow's mother. Gloku took care of Waterlily and the rest of her grandchildren when they were small. When she died, her family wanted to honor her by holding a ghost keeping for her instead of a traditional burial. She tried to make sure Rainbow married Blue Bird early on, but Rainbow had already asked her before Gloku had the chance to talk to him about it.