Dd was using a plastic fork and knife in a cafe half way through her meal I noticed that 1/2 a prong was missing I searched her plate and couldn't find it, I think she has probably eaten it. I spoke to staff about this and the manager should be calling me back. Will it pass through her? if not what do I do next, what symptoms do I look out for and how strongly should I kick up a fuss at the cafe?. The assistant said they use hunbdreds of sets a week and have never had this happen before.