Lyn was Six's mother and wife of Arun. She was also good friends with Four's parents Lara and Liren.
Lyn would have been raised by her Grandparents and assigned a Cêpan at the age of 11 and would have been taught to control her legacies once they had developed. At an unknown time between the ages of 25 and 35, she would have left Six with her grandparents while she left to develop her Legacies further.
She would have died fighting the invading Mogadorians during their week-long invasion of Lorien.