She has bright blue eyes.
Her strength in the One Power is unknown, but given the amount of time spent in training (12 years), it can be assumed that she is moderately strong and probably a middle-high ranking sister.
She has remained loyal to the White Tower during the split.
Irgain was one of the Aes Sedai involved in kidnapping Rand. She was shielding him along with Ronaille Vevanios and Sashalle Anderly when the Battle at Dumai's Wells occurred. They were all stilled when Rand broke the shield . Irgain's two Warders were also killed during the battle. She was taken prisoner soon after by the Aiel Wise Ones. They used mild manners with her because for them her stilling was a sufficient punishment.
The Last Battle Edit
It can be assumed that Irgain, along with the other Dragonsworn Aes Sedai in Cairhien, fought in the Last Battle. Lacking other information, she is presumed alive. It is likely that she has resworn the Three Oaths and was officially reinstated as a sister since the Last Battle.