User blog comment:DemonicsFire/volume 4 and the "new" ages/@comment-14539881-20160711154217/@comment-26397825-20160712062434

Even if Ruby was 14 in her trailer and the others were 16, we know that they were 15 and 17 respectively by the time they started at Beacon because Kerry told us in a livestream. It's still been 15+ months since the beginning of the Beacon year, which still puts them at a year older.