Nobody's considered this, but Hild might just be overestimating herself here. She may be the only hunter in their settlement, but as for the Lnu tribe, basically every able man hunts and on top of that knows the land from birth. And with them being currently on semi-hostile terms with the settlers, there's a zero chance she'd just sneak in unnoticed.
Realistically speaking, she'd get an arrow to the back of the head long before coming anywhere near the shaman. And ironically start the war in the process. We'll see how the author plays it out though