I had twice weekly NSTs and BPPs as well b/c of GD
If she fails her NST b/c she is sleeping or moving away from the doppler (I assume that's what you mean by her acting up)- they will just do a BPP ultrasound and if she passes that-then she's good. Or drinking juice, etc can get her to wake up as well.
My guy would often sleep for his NST then they'd buzz him awake (have htey done that yet with you?) and he'd wake up but kick and turn away from the doppler so it wouldn't record his heartbeat so I 'd often be there for an hour.
He failed once b/c his HR was too high so I had to go to the hospital for monitoring and he did fine