I have decided to have Nyrissa appear early on (inspiration from the CRPG) where she comes to them as an ally seeking help to get rid of the Stag Lord.
Without really thinking about her relation to the animals, plants and fey creatures of the Narlmarches I let her introduce herself as "Guardian of the bloom", a protector of the Narlmarches.
I am seeking some help/inspiration about how the different creatures of the Narlmarches might perceive her, if they even know about her - especially fey creatures who are in the adventure path e.g.Tyg-TitterTut and Perlivash and later the Dryad and Satyr (don't remember their names).