Belief
Sometimes Elphaba wished she was religious. Wished she could have the comfort of knowing there was some supreme being on her side, of knowing everything was part of a plan.
Sometimes Elphaba scoffed religion. If there was a higher being, why did it allow Animals to be prosecuted and harmed? Why was she green? Why couldn't things be fair?
Sometimes, as she lay against Fiyero without a care in the world, she knew there had to be something out there that made sure things turned out all right. She still didn't have all the answers, but somehow it didn't matter.