If she is going to cash in her boon it should be to end dragon hunting by the daygon. I always kind of thought book 2 would somehow find her stumbling into the prince and ending their hunt on innocent dragons. I also saw her exploring a new area but maybe needing the healing of the tree for someone important at some point so she has to go back and we can find out what happened to the village after the end of book 1 or maybe her just sneaking back to say a proper goodbye and finding out the importance of the crystals. There are so many options I can see why you would be at a loss of where to start. I would truly like to see some true justice against Kena and to know what happened to the leader of the village, maybe him apologizing declaring her guilty (or did he truly fall dead because of his judgment?)