Dot is a member of the Sallis family and lived in the Sallis Mansion in Stain'd-by-the-Sea. They were a very rich family and had their own chauffeur. Her family were very close with the Mallahans, and they would let their newspaper use their grounds for research and badminton games. She knew Moxie Mallahan for the girl's whole life.
When the economy crashed, Dot and her family left town.
- The Sallis family name could potentially be a reference to crime author and poet James Sallis.