Why did feds plan to question Sheryl Crow?

The American professional cyclist Lance Armstrong was accused of doping. It was suspected that the athlete had administered EPO and other banned drugs.
A lot of persons provided their testimonies in the court during the investigation connected with Lance Armstrong’s case. A former girlfriend of the sportsperson was also targeted. She had to appear in the court. Some sports journalists noticed that the musician Sheryl Crow had been interviewed by federal prosecutors.
The athlete Lance Armstrong and the musician Sheryl Crow were claimed to be one of the most celebrated couples. They spent a lot of time together. Sheryl Crow lived with the seven-time winner of Tour de France in Spain. The musician travelled with Lance Armstrong during his workouts. They were in a close relationship, when Lance Armstrong won Tour de France the 7th time.
Lance Armstrong’s former teammates Floyd Landis and Tyler Hamilton claimed that Lance Armstrong had administered forbidden medicines. They also confirmed that the athlete had been the leader of a doping group. Furthermore, Floyd Landis and Tyler Hamilton claimed that Armstrong’s apartment had been full of equipment utilized for application of forbidden products. These persons were going to testify against the 7-time winner of tour de France. They claimed that Lance Armstrong had won Tour de France 7 times with the help of banned medications.
As for Sheryl Crow, she didn’t appear in the court because the case against the sportsperson was dropped prior to the hearing.
While federal prosecutors dropped the case, the USADA continued to pursue the former athlete. As a result, Lance Armstrong lost his titles. He was also sentenced to life-time ban from professional sports. Fortunately, his charity against cancer was not affected at all. Sponsors continue to support him and donate. Although his titles are lost, Lance Armstrong is appreciated because he helps numerous persons in their efforts against cancer.