Maple was born in 2252. She usually guards the gate to Oasis and only heads inside the gates to eat meals and sleep, and then returns to her post outside to stay alert and halt any incursions. Branchtender Linden is her guard relief. She is the newest addition to Oasis and is extremely loyal to Tree Father Birch.
Oasis: She is with Tree Father Birch in that she believes that Oasis's growth should be stopped. After you have completed the quest and added Birch's sap to Harold's heart, she will give you Maple's garb.