Something rustled gently through the leaves, and Cynane clenched her jaw, taking a proper hold on the arrow.
"Because we're not alone out here. Someone, or something, is stalking us." With this, she motioned subtly with a jerk of her head, towards the foliage on the left side of the road.
OOC: The stalker is quite stealthy in forested areas, but not necessarily so good that none of the group would hear, once they were alert.