Sabine was probably around 19 when they arrived back at the Bruma clan, after everything in Elsweyr. Then, there was the move up to Skyrim. Between traveling and getting a large force from the Riften clan to Ralbthar was probably a few months. After clearing it was a two month skip to get everyone settled. A few weeks after that, they set off for Black Marsh. Traveling across the continent, with a stop in Cheydinhal, probably would have taken some time. They took a quicker route on the way back, so it probably was not an entire year, but would be the better part of one. But, in combination with the months before that, I'd add another year, making Sabine over 20, probably getting close to 21. Then, there was a two year skip to Julan's naming day. Sabine would be 22 at that point. Then three years to present. So, Sabine would be 25, close to 26. Ahnasha is 33, Meesei is 39, Lorag is 43, Fendros is 35, Janius is 32, Kaleeth I think is 29, since she was 19 when Sabine was turning 15. If Rhazii was born at that time, then he is currently 10. With Julan being one or two years younger.