Local cat demands immediate sustenance

Hello! In the mornings (well before breakfast time i might add), in order to get out attention for breakfast, our cat used to aggressively scratch our bed frame cover. I've put plastic around the bed frame so she can't do that, but now she's decided to scratch the fitted sheet on our mattress. I can't put plastic on that and I don't want her to destroy our sheets so I am at a loss as to how to get her to stop. Any advice would be super helpful.