Sandra welcomes you into her dressing room with a wink and a smile.
The room contains a slightly dizzying quantity of full-length mirrors. You suppose Sandra's never in any doubt about who she is.
I've written a few fics that focus on Sandra, but several of them are embarrassingly self-indulgent and have therefore been hidden deeper in this unnavigable website. For now, you can have it takes a village (or perhaps an ensemble) (1,000 words, hosted on AO3), in which Sandra announces her pregnancy and Robert gets odd ideas about the parentage.