furniture to help with eating

hello my name is matthew my mother suffers from Ms and Parkinsons she is struggling at the dinner table and keeps falling down. i have seen special chairs online but they are very expensive and i dont want to buy if it wont help.

does anyone have any advise for what could help her as she is having a tough time just sitting still at the table and im hoping there is some kind of chair that will help support her

thankyou for your help i really appreciate any advise