Jacen had briefly left the place he and Allana had been staying at to go out and scout. Rather than putting trust in Allana's dubious ability to stay put, even with the local flatcasts broadcasts blaring before her eyes, Jacen had left Willow in charge of Allana. If a red-headed witch couldn't handle a red-headed Force sensitive child, then things were really going to be interesting when he got back.
Out of sheer habit, Jacen had concealed himself, both his Force presence and his actual physical presence. He was undetectable to most every one here, be they evil or good, but most especially, he was invisble to all the Force users. No matter how hard they tried, they would never find him.
Even as he moved, however, he felt a familiar presence. A far too familiar presence. His initial joy, however, was soon suffocated with wariness, suspsicion, and sorrow. He remembered accusations Jaina had flung at him about a fall to the non-existent dark side, and that he had become Dark Lord of the Sith. Jacen was no fool. He would not approach, but would linger in the shadows.
Because he really had no desire to face off against Tenel Ka, the woman who had given birth to his daughter.