By Liam Buckler & Adam Wareing A delivery driver was left stunned as a “raging” customer asked her to take a cake with “you’re dead to us” to an accident and emergency department. Raven Walker admitted she was baffled to receive the bizarre request after accepting an order for a cake and roses on December 12. The red-faced 36-year-old says she got a ‘weird look’ from the baker but they completed the order for $27.99 (£22) – and even asked her if she thought it looked okay. A viral image shows the vanilla sheet cake with red edible writing that reads ‘You are dead to us’ surrounded by green and…