Miliphrene is one of Glisselda's ladies-in-waiting and her close friend. Glisselda calls her "Millie."
Millie and Glisselda are chatting and giggling about Glisselda's music tutor, Seraphina, when Seraphina enters. Millie is embarrassed to be caught gossipping. She stays for Glisselda's harpsichord lesson, and when Seraphina questions Glisselda's beliefs about human domination over dragons, Millie participates in their debate. She explains what cockroaches are to Glisselda and tries to find a solution to the dilemma of a human-cockroach war, suggesting that humans would let cockroaches have certain houses.
Millie hates cockroaches.
- Seraphina: Chapter 4