Does Parkinson's Disease leads to paralysis??

I don't know if this is the right forum to ask this question, please can anyone move me to the right place if I am at the wrong forum.

So last Friday, I was doing my volunteering in a hospital ward, I was feeding this lady who had swallowing difficulty so I had to feed her food and drink with tea spoons. She was very depressed and begged me not to leave her several times when I just wanted to go and grab some tissues to wipe her mouth.

Sometimes her speech was very slurred that I couldn't understand at all, but sometimes it was very clear that I could understand straightaway.
Whist I was feeding her, she told me "I have Parkinson's Disease, I can no longer move my arm, and I won't be able to move my whole body." which means she will become paralysed. I held her hand and could feel it trembling.

I felt really sad for her but I didn't really know what to say. I just told her that you have a family that comes to visit you frequently and the lovely staffs in this ward who can support and help you.

So I googled Parkinson's Disease after I went home, and only Wikipedia mentioned paralysis as one of the characteristics of Parkinson's. I looked on NHS choice and other websites, they all mentioned things like tremour, slow movement, rigidity, depression, swallowing difficulty etc... but NO PARALYSIS!!

So this made me very confused, I wonder if I misheard the lady or the lady had some misunderstanding on her condition?? Can any experts answer my question please?? thank you very much.

symptoms depend on the stage of disease. at first it presents at slowness of voluntary movement (bradykinesia). end stage would be loss of all voluntary movement (akinesia).

Thank you so much!!
So do everyone with Parkinson's disease develop to the end stage or are there treatment or medication that can control the progression of the disease??