I think it is unlikely. Firstly, in drifting into the slipstream, she would experience a powerful torque, twisting her away from the center-line (and maybe creating gyroscopic precession of the wheels around the bike's longitudinal axis). Secondly, the slipstream will be very turbulent. Thirdly, the speed is well above a human body's terminal velocity of around 120mph, so the slipstream is powerful enough to pick her up and throw her to the ground, especially given that drag goes by the square of velocity.