```json
{
  "TragedyDegree": 1,
  "ComedyDegree": 3
}
```

Explanation: 

- **Tragedy Degree**: The story lacks significant tragic elements. It focuses more on the emotional depth and beauty of the art rather than any profound sadness or loss. Therefore, it scores a 1 for Tragedy Degree.
  
- **Comedy Degree**: While the story isn't particularly comedic, it does have elements of warmth and positivity, especially in the interactions between Marla and Liam and the overall sense of wonder and commitment. However, it doesn't fully fit the comedic criteria laid out for higher scores, so it receives a 3 for Comedy Degree.
