To be fair, there's no doubt drugs were involved in the tournament. They all had to prove they'd taken them before they were allowed to play.
Andrew Richardson, who was her temporary coach for when she played in America has his own commitments in the U.K. which meant he could not be her full time coach on the WTA tour. She also wanted an experienced WTA tour level coach for her first full season in the tour, of which Andrew Richardson also didn't have.