How many stairs. Is it out side or in side. They have these chairs you attach and the chair. Ride up and down the stair cases. Ones of my clients had one for her child that have CP
Has a risk assessment been done at home with your mother if she has had a fall the occupational health nurse should visit an do one then they can put things in place to reduce the hazards of future falls
Put a gate up.
You best do something....