I know about teaching your wife...I taught MSF for a few years Instead of trying to teach her, we took the class together.(with me as a fellow student). We were talking last night and think this Rebel idea is even better because I dont think she ever got comfortable riding because she may have gotten a bigger bike sooner than she should have. And then she didnt ride and that may have been a part....
We will be heading out in about 90 minutes to look at that bike...
In my case, I was certain she would fail MSF starting cold. I had taught her to drive an automatic trans car years earlier, and that was a difficult and long process (and I think it may still be an ongoing process, 30 years and 6-7 fender benders, later).
I taught her from scratch, using a baby steps approach. Step 1 was just easing out the clutch in 1st, feet up and rolling 20 feet to a smooth stop, feet down. As we got to step 2, we'd do 1, then 2. Then 1, then 2, then 3. And so on. I made it as easy as possible, as any success however small, breeds confidence. On bikes, I think only half the job is teaching
riding skill, and the other half is building
mental confidence. Building confidence on every single ride may be even more important than building skills.
In VA, she could get a MC learner's permit just from a written exam, and was then legal in another endorsed rider's presence (but not on freeways or at night, as if). So we're good out on the roads (and parking lots). Near the end of the year, we'd ride over to DMV offices and use the painted MSF box painted in the parking lot on empty weekends. It took a lot of trips over there for her to be able to stay inside the box.
Only at the end of the year (with a winter and not much practice), did I get her enrolled in MSF (alone, but I showed up for the day and a half in the box to observe and lend support). With my plan and practice, she smoked the course. A half dozen were kicked out of the rider portion of her class (and that would have been her, if we hadn't done the prep).
And really, there wasn't all that much screaming and yelling, until we started going out on the roads and playing in traffic where
sh!t happens every time you're out there.
I know you know all this, I just posted for others who may be considering this challenging activity.
Best of luck on your wife riding 2.0 program.

My only other observation on this is: Over the years, I've had plenty of
looky loos stay behind and parallel me to look at my bikes. But even though plenty of women ride, when we would ride together (with her big fat blond braid hanging down her petite 120lbs), we had a large number of women drivers (often with multiple women in the cars) do the same thing, to watch
her ride (not our bikes).