Save your breath guys, it's obvious that "looks" is the determining factor here, not function, practicality or safety. I'd suggest if someone is really that concerned about a little space between the rear tire and fender they should get a custom rigid with the fender slammed onto the fat tire, like the crap on OCC. Those are great for parking in the garage or trailering to a show. Of course if you pay attention to what those OCC boys really ride on a trip of more than a mile or two, it isn't one of those bikes they make for the rubes.
If the bike highsides off the stand due to a slight bump or a gust of wind, I guess she can get it fixed or buy another one. If something solid makes contact with that high spot in the middle of a curve and dumps her and the bike, she can buy another bike and hopefully any missing skin or broken bones will eventually heal. Assuming she doesn't slide under a semi of course.
As for the guy in that other forum, all I can say is if you ask enough people you will eventually find someone who will tell you what you want to hear. It's obvious you and your wife want to lower her bike, so just do it. The majority here seem to think along the same lines as I do, but when it comes to her and her bike it's not a democracy; she gets the final say.
JMHO - Jerry