{
  "TragedyDegree": 2,
  "ComedyDegree": 4
}

Explanation:
- **Tragedy Degree: 2:** The story contains almost no tragic elements. There is no mention of loss, grief, or significant emotional setbacks, apart from perhaps the inferred absence of Rebecca's great-grandfather. The overall tone remains positive and adventurous.
- **Comedy Degree: 4:** The story has a light-hearted and uplifting tone with a happy ending, though it is not strongly comedic. It's more about adventure and discovery rather than humor. The delight comes from the sense of accomplishment and connection to her great-grandfather, making it emotionally satisfying.
