HUZZAH!
The bike store called and had it ready and charged. It's sand color with some snazzy parallelograms, a new charging system (explaining the problem with replacing the electrical system in the old one - the handle is all different). It's....shiny.
I just went and picked it up and rode it home. I do need to make some adjustments to the seat - everybody in the bike shop keeps forgetting that I am a short person with little legs. I wanted to ride and ride and ride, but alas, it is hot and hot and hot, so I had to come home before I got too dizzy.
But. I have my trike again. It's summer, so my riding will be a bit restricted, but...tomorrow, I can go out all on my own. I can't tell you how much better I feel.
(Although I'm sure most of you are feeling relieved that you no longer have to read my complaints about going trikeless....Chrome, that's a word. I'm a writer, and I can make up words when they are important, and that word was.)