Based on the given story, here is the evaluation for its Tragedy Degree and Comedy Degree:

**Tragedy Degree Evaluation:**
- There are almost no tragic elements in the narrative. Mariela reflects on her past nostalgically, but the story does not present any significant emotional setbacks or profound tragic moments.

**Comedy Degree Evaluation:**
- While the story is hopeful and inspiring, it does not contain comedic elements or plots that are light-hearted. The overall tone is earnest and motivational rather than humorous or delightfully happy.

Given these considerations, here is the JSON output with the scores:

```json
{
  "TragedyDegree": 1,
  "ComedyDegree": 1
}
```
