Complex sentence: Ginger becomes distressed because the woman (Joyce) starts stalking her insisting that Ginger is her daughter with the help of her brother-in-law while her parents are out of town.
Split into simpler sentences: Ginger becomes distressed because the woman (Joyce) starts stalking her insisting that Ginger is her daughter. Joyce uses the help of her brother-in-law while Ginger's parents are out of town.