I've seen a few people that could lift weights and exercise, and then not fight worth a ****.
Some people are just not ready for a punch in the face.
True, they are not the same skills and mindset. But her workout routine makes it look like she's fairly tough, and she's apparently willing to 'once more unto the breach' which speaks to the mindset. Only one way to find out I suppose...set up a sparring match! Volunteers?