Ollie and Dawn are a pair of step cousins and they work with each other a lot. This frustrates Arlene, due to her father's rivalry with Dawn's father, so she does everything in her power to destroy the vibe. Although s At the end of the first season, Dawn tries to find Wanda and goes in her house with Ollie (they were invited because it was a free party) and Arlene actually danced with Ollie.
Trivia
Arlene barely knew her mother, Trixie, due to her having passed away after Arlene's birth. Because of this, Arlene considers her fairy godmother, Blonda, the closest thing she has to a mother.