```json
{
  "TragedyDegree": 3,
  "ComedyDegree": 6
}
```

**Explanation:** 

The story of Dr. Mia Hammond and her patient Alex contains some tragic elements, such as the car accident and the discovery of a malignant tumor in an already critically injured patient. These events introduce moments of significant emotional setbacks, but they are not overwhelmingly tragic since the primary focus is on the recovery and success story that follows.

The story leans more towards a positive and uplifting narrative. Alex's recovery, the unwavering support from Dr. Hammond, and the ultimately successful treatment plan contribute to a relatively light-hearted and fulfilling ending. While it isn't heavily comedic, the emotional tone is delightful and offers a happy and inspiring conclusion.

Therefore, the Tragedy Degree is rated at 3 for including some dramatic but not deeply tragic elements, and the Comedy Degree is rated at 6 for having numerous positive and uplifting moments, leading to a satisfying and happy ending.
