Dd has been invited for a play date after school. She is 5 and is severely allergic to fish. She has been on one other play date by herself but childs parents are gp's so felt quite confident. This play date I am a bit worried as I know the family do alot of Thai cooking and use fish oils. Obviously she will serve her something appropriate but I am worried about cross contamination. Should I send her with her own food or is this ott? Wwyd?