Acacia stays in the trees as long as she can, trying to get closer. She'll attempt to stay downwind as well, something she does almost by instinct from long practice.
She can stay in the trees for a while, but once she enters the valley, there will be no cover available. The ground there is barren. There's only one way to reach the sleeping beast. It doesn't seem to have heard her yet.
My FFRP characters. Avatar by Kid Kris. Sigatars by Gulaghar, Kid Kris, Zefir and billtodamax, respectively.