My most sincere and deepest thanks for the responses to my bleg posted below!
Not just the practical, but the prayers and good thoughts, as well.
One of the things about the Internet that never ceases to amaze me, is with all the political and religious divisiveness that one sees on the computer screen, when difficulties occur, people step up!
We now have enough funding to obtain a replacement controller for the lift chair, as well as some other needed items, like the shoulder cooling vest my roommate will need following her surgery.
She and I are both overwhelmed, and very grateful!