Parkinson's disease is a deficiency of the neurotransmitter dopamine. Dopamine is responsible for how the brain deals with stress, especially the fight-or-flight response. Thus, it affects greatly on the movements of the body. Also, dopamine is responsible for information processing. That is why people with Parkinson's disease have trouble in retaining their memories or be in deep concentration.
This happens in the second trimester. I'm pretty sure that's the right answer. I hope it helps!
You Should Go and help her out and check if shes ok and if she is having trouble, You should call 911 to fast help her up and you would probable save a life if you helped you would feel good about your self