Mrs. Jensen is the mother of Lorraine Jensen, who is one of the main characters in the book. Mrs. Jensen is a single parent who works as a private-duty nurse and struggles to make ends meet. Her husband cheated on her and then left when she was pregnant with Lorraine, and the experience has left Mrs. Jensen bitter and vindictive. Mrs. Jensen is fixated on how cruelly Mr. Jensen treated her, and has a cynical attitude about the patients she cares for and life in general. She has a poor relationship with Lorraine, is always criticizing, and is unsupportive of her daughter's interests.