I, for one, do think she will be there tomorrow. If anything, just at the end for a curtain call.
If her ribs are too delicate for the harness, perhaps they won't fly her, if she's up to doing the performance minus the flying - and the producers are OK with it.
"The Spectacle has, indeed, an emotional attraction of its own, but, of all the parts, it is the least artistic, and connected least with the art of poetry. For the power of Tragedy, we may be sure, is felt even apart from representation and actors. Besides, the production of spectacular effects depends more on the art of the stage machinist than on that of the poet."
--Aristotle