welcome to the board.....I think every passenger has different challenges for individual motorcycles...
For the Bandit, my wife won't even ride on it. Too hard to hang on to and too scary fast. Not that comfy either (but she never got burned). For that matter I would never sit on the back of Jay's Bandit, I think my wife makes a good point here.
but on my California Moto Guzzi, it's a very comfy passenger ride with a back rest. But it's challenge for her to sit on when I am in the rider's seat. So.....I have her get on before I do...BUT, the first time, I made the mistake of leaving the bike running when I saw her climbing all over the foot control- just about to stick it in gear!!!!!!!!
Then, she gets on the bike with motor off. It takes me a huge lunge to get the kick stand up...got to be careful now to park in a level place with no gravel. Now with that covered and getting a few rides in, I see melted rubber from riding boots all over the pipes.........
OK...just part of the process.
I hope your wife's burn heals.