What were the four truths of Buddhism that Kelly learned from a German woman in Nepal?

During her stay in Nepal, Kelly met a German woman named Sabine who was there with her three-year-old son, Peter. She was a student of Buddhism which she explained had four truths. The first was that suffering was inevitable; the second, suffering was caused by craving pleasure; the third, suffering will end when you eliminate your desires such as possessions and relationships; the fourth was called the Eightfold Path which was too complicated to understand in one sitting.