I feel so sorry for this person, but unfortunately this is nothing new. Here in Hereford UK, we had the same problem with the KH. The congregation bought this property and refurbished it from "scratch", they chose to have the main hall upstairs, and although they promised that they would provide access for disabled ones, they never did (OVER 11 YEARS TO DO THIS). We personally knew of ones that were unable to climb the stairs and had to sit in the foyer downstairs watching the service on as black and white TV. Usually sitting alone, as the presiding overseer was not happy about others sitting in the foyer. This room - was a open access to the toilets and door to the outside, therefore in the winter time it was extremely cold and uncomfortable for the disabled (some in wheelchairs). Some of us set-up a fund for a "Chair-lift" but in their (Elders) wisdom, and I believe also against charity laws (re:Restricted Funds rules), they chose to rename the fund to a "special needs fund" thereby turning what should have been a restricted fund for a wheelchair into a general fund to spend where ever they decided.
As you have so rightly pointed out, it wouldn't take much effort to build a ramp for the disabled lady at her home, especially if this would enable her to get to meetings, surely this is what christianity is all about. I can't imagine Jesus ignoring her plight.
One good thing may come out of her not being able to get to meetings - especially as it appears she uses a computer, perhaps she could look at this forum and find out for herself just what a mind-controlling cult they really are.
Twinkletoes