Jacen took note of her instructions, and followed them as best he could. He even managed to find the dirt road without too much effort. He was going down it when Jaina asked him whether or not it was odd that Vader had spared her. It was an intriguing question.
"I'm not sure, sis..." Jacen reached out with the Force, and felt his sister's festering rage, and more than that, her extreme exhaustion. He knew she'd probably wallop him pretty bad later, but first things first. With the delicacy of a first kiss, he put her to sleep.
He pulled the car to a stop, then walked over to his sister. He gently picked her up and cradled her in his arms, then sent his mind questing out, searching for their father's familiar bright aura. Pleased, he began to trudge out to find his father.