I have to say, the best thing about being a GM is throwing the characters into terrible situations and watch them either find some creative way out or burn >:D
What can I say? Boredom is the fuel for creativity!
Also, I'm curious how Serphia is going to escape the castle now as she is on the surface. It's just a big drop on all sides(I doubt she can climb with Rae), and the only bridge to the mainland is heavily fortified :P