i had a (name of restaurant omitted) sandwich that i ate half of sitting in the fridge. my boyfriends 4 year old daughter got the sandwich out and was running around the house with it saying she wanted some. so i cut a piece for her and i found a knife in the sandwich. she could of tripped and got stabbed with the knife. i am very upset at this and i need to know what i should do. and if i can sue.