Based on the provided story and the criteria specified, here are the evaluations for Tragedy Degree and Comedy Degree:

**Tragedy Degree:**
- The story contains several tragic elements such as betrayal, a dark family history, and emotional pain. These elements contribute to a strong emotional impact, particularly through the discovery of the letters and Emily's realization of her family's past actions.
- However, the story also carries themes of resolution and redemption, as Emily is determined to uncover the truth and heal the wounds of the past.

**Comedy Degree:**
- The story has almost no comedic elements. The tone is serious and focuses on the revelation of a painful history and the emotional journey of the protagonist.
- There is a faint touch of optimism at the end with Emily's sense of peace and determination to make things right, but it does not qualify as a comedic element.

Given these aspects, the scores are as follows:

```json
{
  "TragedyDegree": 8,
  "ComedyDegree": 2
}
```

- **TragedyDegree:** 8 points for profound tragic elements with considerable emotional impact.
- **ComedyDegree:** 2 points for the minor presence of hopeful resolution but an overall lack of comedic elements.
