Only if she didn't turn her hand...what does it matter now.. do you know how many hands handled your food from the killing it to processing it, to freezing it, to cooking it, to prep tables and so on!
unless you are at the table with your blackberry waiting on an answer it might be too late. if i felt that disgusted by it i would make up another reason and tell the manager you would like a new dish so they wont be spiteful about having to prepare another dish. like an allergy or something to an ingredient. then i would order something else entirely to be on the safe side. (i.e. no recycled food)