Hey xz and Weird Al, f your race shlt.
The OP never mentioned race.
Here’s a “non-racial” reason: because she hasn’t shown the form necessary to overcome the deficiencies in her 10.9. She can be very good at speed, but blocks and early/mid accel are not good, and imo have shown mo sign of improvement.
You need either rangey power or brute force to get out of blocks and early accel, and she has neither. She is not a natural brute, so she has to use rangey power—and for that, she needs a different arm swing. She needs different action at the shoulders to permit a different head position to permit a different torso angle and foot plant, to allow the contact time for power delivery while leaving the body in favorable position for optimizing the subsequent footstrike.
In short, she has no blocks, and no drive phase.
She is much better-suited to the 200, and possibly the 400 if her energy systems permit (which it seems they do).
Better to go with her natural talents than to keep trying to force a square peg into a round hole.
As for her 200, yes it’s early. I see her having an energy issue, and that’s about it. It might be as simple as tapering off a heavy load. We will see…