DERRY GIRLS actress Siobhan McSweeney has said her parents dying was the “best gift” they gave her. The Cork star was left devastated after the death of her father while she was shooting the second season of hit show, DERRY GIRLS. Her mother, Mary, died in 2005, the same year she graduated from the Royal Central School of Speech and Drama. But opening up about her parents’ death, Siobhan said losing them was the “best gift” they gave her.