As long as you're keeping them properly (G. rosea like it dry dry dry!) Then there's nothing to worry about. It may very well be molting behavior and she's just making her cage feel more secure before she molts. If not, she's just being a rose. They're known to have quirky habits - mine went through a landscaping phase too.

Wait and see if she gets a bald spot on her abdomen that starts out tan and darkens to black with time, or if she just molts. If she does, that's why she was remodelling. If not, then she was just doing it for the heck of it