Azurewraith
Explorer
I like your early morning musings. Gives a reason to be initially and more importantly a need to be. He could then stay with the group watching the witchers work trying to learn what he can and maybe even cozy up to one and try gain some formal training so when he does finally leave a mark on the world he will be ready both body and mind for his horrific death.The idea of a Squirrel scout among the Free Elves of the Blue Mountains fits really well with the party's current location at the edge of Dol Blathanna, the Valley of Flowers.
Basically, they've brought the NPC Odvara (a half-elven source) to the elves of Dol Blathanna for tutoring. However, they learn that the elves won't come to the village of Posada to meet because there is someone called "Old Nan the Hag" keeping them at bay.
One possibility is your PC, who doesn't abide by the Queen of Dol Blathanna's laws - being a Free Elf / Squirrel, somehow becomes a point of contact for the rest of the party. Like a guide through the magic that shrouds Dol Blathanna. Or seeking to disprove the elven superstitions around "Old Nan the Hag" (the elves would have another name for her).
Just some late night thoughts.