There's no reason to leave on her part. She's coached by Julian anyways and is in the same environment that brought her success in college. Same sport psychologist (Darren Treasure), great strength coach, and she gets to train with the best in the world (Koko, Hassan, and Rowbury) in addition to free altitude camps. They have the best resources there is and it's her best shot at a global medal. Julian is the real deal.
Jenny: "I don't see why anyone would want to join the group". Many top post-collegians would love to join the group. The conviction was all based on circumstantial evidence. Every runner there has said they were NEVER pressured to take any illegal substances, including past members and even the athletes that wrote statements for the case.
BTC is starting to become way too saturated with domestic runners competing for the same spot and we don't even know if they wanted her. If she went there, everyone would be like "why isn't Schumacher developing more Americans?" Jerry is already coaching a lot of athletes right now. OTC is all Green, Blankenship and Mead. Is she goes with a private coach, she gets much less money and has to pay a coaching fee. Nike gets the best athletes and gives them limited options in terms of groups and financial incentives to join the select groups to promote their brand. Say what you want but her decision is completely logical.