IMHO! That's simply too cool. 100% head turner.
Please stress to your Mrs. Trikes by their nature are difficult to control. The center of gravity feeling is opposite what she may think, and that is the sole reason people get into trouble when handling them. They all feel like they are forcing the opposite direction in corners, and people tend to follow the feeling, amplifying the problem.
Hopefully she will be one of the few that has a natural understanding, and no fear. Best of luck with it, and many happy miles.