By Olivia Wheeler EastEnders viewers were quick to slam Stacey Slater and Kathy Beale’s mistake amid Karen Taylor’s return. Karen is back in Albert Square just weeks after her character left Walford for Spain. Karen left under a cloud when she took full responsibility for the orchestrated kidnap of Albie, Sharon Watts and Keanu Taylor’s son. She decided to leave the Square for good, taking Phil Mitchell’s money – which he gave to Sharon to pay off the kidnapper – with her. However, on Monday night, Karen returned to Walford in search of her son Keanu, who is believed to be missing after allege…