The idea of creating a settlement, in Xene's mind, centers around the creation of a temple for Erastil. Something on the border of the new settlement; preferably surrounding a giant tree. She expects the temple to begin as a simple shine and common area; growing slowly into a mostly-enclosed area with a strong garden theme.
Settling down, getting married, and having children are all key parts of Xene's religion. She would like to marry and have children, but realizes that Kesten might not be the best man she's ever met, but their early relationship is tentative, and she'd like to see how well they get to know each other and where the relationship might take them before asking for a commitment. It takes a village to raise a child, so Xene would ideally like to wait until the settlement is at least somewhat established before bearing children. She wants at least two.
Xene is very interested in helping the first settlers make peace with the forest. She's certain there must be a way to find a happy medium between the forest and the settler's needs; and suspects some wisdom can be gained by the Harrower of the swamp (it seems wrong to call her an old witch).
Her purpose throughout all this will to provide whatever support the young master might need. She knows she relies on Tamarie far more than that grand old dame relies on her, and her friendship with Kaylee includes a shared love of the wild places. If either Tamarie or Kaylee needs her help, they will naturally get it — but it is most likely that they will have to ask.
In the short term, Xene desperately wants to spend time at the old stag head temple and contemplate her role and her incredible abilities; being able to call upon Erastil's abilities—learning through dreams and seeing portents in the shadows of the leaves are all still fairly new to her; and she's only now starting to realize how much she's taken for granted and relied upon her faith and old Dead Eye's grace in the heat of battle. Some of this seems right — but the rest of it needs much more thought and time than she's given it.
If I missed something Denis, let me know. Regardless - comments from everyone are welcome here.