Acorn Man Savior of the Forest Series 2 Book 2 Green Anarchist. Acorn Man Savior of the Forest Series 2, #2

Oliver and Emma Roy are out to rescue the search party members who have been taken hostage by Roland Vass and his people.  However, as Oliver and Emma think they have the upper hand - Roland sees a loophole in his scheme.  He shows the two Mountie parents - Andrew and Steven Roy that it is in the reservation's constitution that the indigenous people could do whatever they want with their land without interference from the Canadian government.
 However, this spurs Emma to explore a more militant path enter - Salla Lindgren a known environmental radical and green anarchist who just can't resist causing chaos wherever she goes...