It's a bildungsroman, it's an important part of her education, it sets up a LOT of world-building, and I'm going to have to work up more conflict. There haven't been any bloody fights on stage, but someone died (and I may have to put that on stage) and the heroine had to abandon her home and everything she knew for her safety. Not because of the death -- that actually won her some time -- but they set the tone early, and while the story can meander, it can't really amble along safely when she knows there is so much danger.
Lucky, the boundaries involve dangerous things, that's why they make them magical. On the down side, they did make them, and the purpose of this journey is to show them things to prepare them for studies that will enable them to help keeping the boundaries going, and therefore the teachers are at pains to keep them from real danger -- if they can.