As a former teammate of Kara's, I am happy for her performance, and glad she is (seemingly) rid of her constant battle with injuries. She is a very hardworking individual and deserves it. Our personalities didn't always "mesh" as teammates, but I respect her work ethic and think she has had this kind of race in her for a long time.
To address the allegation of whether or not she is using "drugs", I cannot either deny or confirm since I have not had contact with her in many years. But I can confirm that while at CU, this wasn't an issue, unless you count free Powerbars as performance enhancing drugs ;)