Who is Ann Fowler from 'F' Is for Fugitive: A Kinsey Millhone Mystery and what is their importance?

Ann is Royce and Ori Fowler's daughter. As an infant, she suffered from celiac disease, and as a result, she was a difficult baby. Later, when Bailey came along, they found him to be the perfect baby..... he was easy to love and showered with affection.

When her parents became ill, Ann who quit her job to take care of them and their business. On the surface, we see her as a saint in the way she cares for her parents despite their coldness toward her.

Ann is in love with Dwight Shales, and she has waited many years for his wife to pass away, so he will be free to be with her. Note, Dwight has never expressed affection for Ann, but this doesn't change her feelings for him. She is so convinced that Dwight will realize his love for her that she has killed to protect him. Ann killed Jean Timberlake because she believed the woman was pregnant with Dwight's child. She then killed Shana Timberlake because she was spending time with Dwight. Finally, Ann killed Ori, so that after her father's death she will be free to sell the hotel and be with Dwight.