- Queen of Air and Darkness (first appearance)
- Secrets of Blackthorn Hall (mentioned only)
- The Wicked Powers (set to appear)
- She will be Dru Blackthorn's good friend and roommate at the new Shadowhunter Academy in The Wicked Powers. She is also set to have her own romance and adventures.
- Her name and her family's names were created with help from people over at  .
- "Her full name say she’s Thais Rosabranca Pedroso." Cassandra Clare on Tumblr
- Thais pin — Cassandra Clare on Pinterest
- Future Brazilians — Cassandra Clare on Tumblr
- "... you will glimpse one of Dru’s new friends in TWP in a crowd scene." Cassandra Clare on Tumblr
- Queen of Air and Darkness
- Cassandra Clare on Instagram Live