When pulling the car out of the garage I probably do keep my foot on the accelerator, but in a neutral position after the initial nudge to get the car going.
At the time she was driving it I also was having some spurious unable to charge messages come up. I looked at the log after she drove the car and there were a slew of messages that both the accelerator and brake were pushed at the same time. She has lightning reflexes (she was tested as part of a battery of tests 2 years ago and the tester said she had the reflexes of a 25 year old gamer, even though she's significantly older than that) and she flips from brake to accelerator too fast. I've noticed I get warning messages when I let go of one and switch to the other too fast. I know my foot wasn't on both at once, but the car has a lag in realizing one has been released.
She may have let off the accelerator entirely pulling out of the garage.