Complex sentence: Buffy does not know whom she can trust but she trys to save the group of young girls from the demon that feeds off them, eventually she leaves the hospital, and her parents prepare for some big life changes.
Split into simpler sentences: Buffy does not know whom she can trust but she tries to save the group of young girls from the demon that feeds off them. Eventually she leaves the hospital, and her parents prepare for some big life changes.