I posted this before, but it bears repeating...with few exceptions e.g. rear facing cabins, activities on balconies are clearly visible from the bridge. There are security cameras in many areas - especially the bridge to see people smoking, items going overboard, as well as nude sunbathing. Nude sunbathing is not prohibited but the cruise lines make it clear that balcony spaces are not totally private. (Now that I think of it someone on a neighboring balcony could just as easily look around the partition or, down from above.) Knowing our little exhibitionist she probably was making enough noise that it would have drawn attention.
The first bathing suit she bought and wore in the first season when she made her "triumphant return to the beach" had boy shorts and didn't look half bad. I am afraid she thought she looked so good she thought she should show more.