Laz couldn't respond. This wasn't what he was expecting after seeing her again. In fact, what he was expecting was a lot more pain.
Of course, what he didn't know was that his value had gone up to A'ruya's people drastically after finding out the source of his bloodline. Once they found him of value, that meant that she had added value. Combine that the fact that A'ruya herself had fully vested her future on him one might begin to understand her feelings at the moment.
Prior to him disappearing, she had never considered the possibility that something could happen to him. While her people were far more advanced than humans, she herself was still considered immature and therefore thought that the life link she had placed on him would be more than enough to keep him safe. So when the time came that he disappeared from the world and the spirit marking suddenly became inactive, she had no idea what to do.
