“Then why did she use it?”
The generic chair?
Well, when it’s all you have you kind of have to.
Under normal wear and tear those expensive custom chairs last a lifetime, with occasional maintenance and adjustments. Since she had spinal injuries I’m sure it took many fittings to get the padding and angles of things right for her. Not cheap.
Given the choice, would you rather be semi mobile in a chair that hurts or laid up in a bed that hurts 24/7?
Why do you ask a hypothetical question?