I currently run for A&M and have spoken with Tosha a few times over the past couple months. A few observations:
Those of you who say she is "juiced" and don't know one bit of the type of training or person she is just need to stop. She is relentless in her training and that is the reason she made the huge jump. She was good enough in 2010 NCAA XC to qualify for nationals individually.
For all people out there who understand the demands of NCAA athletics, especially track & field, it can be draining. At Texas A&M, out number one focus is being part of a team. Being said, we race any opportunity we have (more than the typical NCAA athlete). Traveling to meets all over the country every weekend, missing 2-3 days of school then trying to make it, never having the opportunity to hang out with your friends that are not on the travel team... If you don't truly love what your doing, the sacrifice of being an NCAA athlete is amplified tenfold. From my conversations with her, giving up a large amount of her time and energy for running wasn't worth what it meant losing, her friends, grades, and happiness.
She wanted to go home to visit her family after indoor nationals last year, but she was strongly persuaded that the track trip to Arizona for spring break was obligatory. She is from Colorado and can't just swing by to see her family on the weekends like many other athletes.
Overall, she is one of the most humble people I have ever met. Her success didn't change her one bit. She will be missed on the track by her teammates, although we still see her outside of track functions at parties and such. I have the ultimate respect for someone who can make the tough choice in life, even if it hurts. She did what she believes will make her happy, and isn't that what anyone else would do?