Complex sentence: She has a rivalry with a group of girls, known as The Ashleys; though ironically she herself is an Ashley, the frou-frou girls of the playground turn her first name into something she detests.
Split into simpler sentences: She has a rivalry with a group of girls known as The Ashleys. Though ironically she herself is an Ashley, the frou-frou girls of the playground turn her first name into something she detests.