Derry Girls Sister Michael Valentine's Day Card by Derry Nice Things. Inspired by the hit TV show set in Derry, Northern Ireland, this card pays homage to the witty and sharp-tongued Sister Michael. Known for her dry humor, she adds a unique touch to your Valentine's Day greetings. Derry Nice Things brings you this high-quality card, carefully crafted with love and attention to detail. Show your loved ones you care with a touch of Derry charm and humor. Perfect for fans of the show or anyone looking for a memorable and hilarious Valentine's Day card.