Larger snake, slower growth, less frequent shedding. So that sounds normal.
As for the length of time she's opaque... I can't comment, but I expect it varies quite a lot between species and individuals. If Cee Cee sheds in one single piece in the end you've nothing to worry about. Just keep notes so that you can build up a picture as to how long she takes to shed and the frequency and over a longer period you have a record that will help you spot anything that isn't normal.