Trenia was to be the name of the Xindi offspring of Naara and Degra and the sibling to Jaina and Piral. Three months into Naara's pregnancy, she contracted Anaprolean Fever and lost the child.
The communications log found aboard a Xindi-Aquatic escape pod acquired by the crew of Enterprise NX-01 revealed the names of Trenia, and two other siblings, as the names of supervisors requesting additional parts. (ENT: "Azati Prime", "Damage")
This character was only mentioned in dialogue.