Mornin',
As I indicated, I am 5'6" and can look just over the top of the windshield. It is actually just right for me, about where I ran the RT shield when I had the adjustable shield. I think, at 5'4", your wife might have the top in her line of vision. Now, that is with the shied all the way down. If she wants to look THRU the shield, as many do, it won't be a problem at all. It is easy to install and only a minimal amount of hardware, but it is well made and rock solid. The folks are great to work with and customer relations is outstanding. I had an F4 on my RT and went back to them for the F3 shield. Very pleased! Hope it works for her! Good luck! :thumbup: