For all that she doesn't feel an intruder after Liliandil's assurances, still Susan wants to give them--

(give ye joy of each other)

--a moment of peace and reunion that's theirs alone. A flurry of motion off to the side draws her attention, and Susan seizes her chance and goes a few steps off to kneel down and help a particularly young fawn who's gotten their flower-crown tangled around their neck.