Ahnasha avoided bushes, trees, and  anything else that might make noise as she approached. She felt Sabine's signal and turned her head to the north to see its cause. After some searching, she spotted Do'rhajul and Arinette in the middle of their conversation. In response, Ahnasha slowly inched her way farther south and west, placing a tent between her and the pair. From there, she kept herself low to the ground and took step after deliberate step until she was just next to one of the tents on the west side of the camp. The approach was easy, but from here, it would start to get difficult. She was going to have to locate Yerig's tent in order to plant the book with the right person, and they did not know for sure which one it was. She would have to be able to peer into them one at a time without breaking her invisibility. Meanwhile, the Orc stood up and stretched out his arms, then started to look closer to the north side of the camp. 

Do'rhajul and Arinette were speaking in hushed tones, but after glancing at the Orc, Arinette motioned for Do'rhajul to follow her. She started walking out of camp...right in the direction of Sabine. It was possible that the zealot just wanted to speak in private to Do'rhajul and had chosen that direction by chance. Or, she could have somehow detected Sabine. If Sabine called in the reinforcements now, Ahnasha would certainly not be able to plant the book, so it was up to Sabine to choose on whether to stay hidden, or abort the mission.