Hi there ~
I would have to see your mom to determine what is really going on. Upon your brief history it seems to me that she is having parkinson's disease or an exacerbation of the same. I hope you visit with a neuropsychiatrist as soon as you can. She might also need a CT scan
to rule out any stroke
or hemorrhage. However, a very complete history and physical examination and investigations are necessary.
I hope this helps. Take care and have a lovely day !