Martinez trains incredibly hard for the results she gets in races.
She over trains compares to her competitors. All these incredible workouts and all she can run is barely under 2 and a solid 1500m?
Funny enough, from a physiological standpoint, she should move up. She can handle modest mileage and great intensity - she simply lacks speed and the talent to run 8/15. I'd love to see her move up - it is her best move.