The ground being clear is good, but suspicious to say the least. Of course this is the arena, so she should probably assume everything is suspicious.
When Trefoil first glimpses the 9 girl, she slows to a stop, keeping still and silent. She's fairly certain that the two 9's are working togther, but there's no sign of the other one, the mage. The girl is probably still trying to find him. She still has her spear, but she'd rather not get caught in combat again.
Instead she waits until the 9 is out of sight. After riffling through her newly acquired pack, she begins moving in the opposite direction.
Spoiler: ActionsChecking to see what's in the pack, and moving at a hustle to the southwest following the forest. She'll keep moving for 30 minutes, or until the forest ends/ something of note comes up.
Is there any way to hide/ conceal tracks? The only reference to this I could find (without using a class feature) was under Survival under tracking DCs:
If this is correct Trefoil will then move at half speed and attempt to cover her trail.Tracked party hides trail (and moves at half speed)