Jacen thought he should check out his new quarters first. Apparently he had a roommate; best to acclimate to that, since it had been a while. (In fact, had he ever had a roommate who wasn't Jaina or Anakin? No, he didn't think so. All the more important, then.)
As he approached the turbolift, he saw the older woman, and brightened -- not just in his expression, but in the Force. "Mom!"