Who is Aunt Dahlia from Life with Jeeves and what is their importance?

Dahlia Travers is Bertie Wooster's aunt, Angela's mother, and Mr. Thomas Travers' wife. The Travers own country estates at Brinkley Court, Market Snodsbury, and Worcestershire. Aunt Dahlia publishes a weekly newspaper especially for woman called "Milady's Boudoir". Her husband finances the project. She enjoys playing baccarat and generally suffers huge losses. Aunt Dahlia loves Bertie, and although, she tries to hide it..... her affection for him is obvious.