A novel about class and manners, the book presents Jenny as the parvenu. She is the woman who has been introduced to the sensibilities of the upper classes, but who can't materially sustain them. Jenny has acquired enough of the sensory delicacies of the upper classes to feel acutely upset at her situation, but she lacks the resources of the upper class that would prevent her problems. Louisa retains enough of her lower-class orientation to enjoy more visceral pleasures, but not enough to avoid being horrified by her sister the servant and her suitor/moneylender Mr. Grimshaw. The novel roils in intellectual and emotional discomfort. Everyone is discontented. Weeding through that discomfort takes a great deal out of each of the characters. Though the book is set in the early 20th century, it had a very 19th century feel to me.
E.H. Young, Jenny Wren (orig. 1932) ISBN: 0140161082