The spasms looks like Tourettes syndrome.
I agree it is probably not a seizure. It looks like a tic that seems to be triggered by being slightly startled. My middle son had several different tics when he was young. Some were auditory and some were movement. He was always fully aware and didn’t realize he was doing them. She seems alert and trying to cover for them as soon as they pass.
Manifesting at her age probably indicates the amount of damage she has done to her brain with drugs and the mental illness of extreme liberalism.