"Milliways surprised me before I was properly awake and then I thought Ysalwen might want to see the city while there was still some light. I didn't know you knew about Milliways or how to explain it. It sounds really bad, the whole unexplained magical portals but there's good food and I've made friends. I didn't want to worry anyone, there's enough to deal with,"

This is actually more than he meant to say, but portals are complicated.