A very dim-witted, childless woman, Mrs. Allen is a neighbor of the Morlands who invites Catherine to accompany her and her husband to Bath for a holiday. She thinks about nothing but clothing and how much it costs, and remembers very little from most conversations, merely repeating things that those around her say back to them. Supposed to serve as a guardian to Catherine during the trip to Bath, Mrs. Allen is too incapable of independent thought to properly guide Catherine through social situations. She runs into Mrs. Thorpe, a woman she knew fifteen years before at boarding school, which leads to her and Catherine spending much of their time in Bath with the Thorpes.