Another swimming pool tragedy has hit our community. A 4-year-old girl has died and her twin sister is in critical condition after they fell into a backyard pool in South Bossier. Bossier Parish Deputy Coroner Doug Morris says the girl's grandmother went to look for them when she realized they were not at her home. Angel Castine has died, her sister Aubrie is critical. The girls were pulled from the pool at a neighbors home on Glasscock in the Bellaire neighborhood.