Of course it’s possible, if one WANTS to do it. Linda Chavez thinks her mother would be “trapped” but more likely it’s Linda who’d feel trapped with her mom around. If she wanted to she could build a ramp. You don’t put your mother in an institution because of a flight of stairs.
I have helped fix up homes several times so so an elderly parent could be moved in. Some homes are easy to modify. Some are more difficult and some are flat out impossible. In those cases we recommend the family move if possible.
If Linda felt so "trapped" she never would have moved her mother in in the first place. But she has had her there for three years.