Who is Lottie O'Cadhain Davies from A Cure for Dreams: A Novel and what is their importance?

Born just after the turn of the century in southeastern Kentucky, Lottie is the main subject of Betty's narrative. Despite coming from a family plagued with the problem of alcoholism and despite being raised by a mother with a temperamental nature and brutal methods of communication, Lottie has a zest for life and a sociable personality. She truly cares about those around her and she will often go out of her way to help others. Though she marries too early, possibly to the wrong man, Lottie takes what is available to her and makes a good life for her and her daughter.