At 26, Holly is the oldest female member of the group and was the first to join Vance when he decided to exile himself to Meresti. Over the years, she has grown fond of Vance, and they have enjoyed a healthy relationship. She is often found following Vance around wherever he goes, and they share the same bed. Since she is a veteran member of the Family, the rest of them accept her relationship with Vance and don’t feel she is trying to get anything out of him or use him to get what she wants. She is strong-willed and intelligent, having been tutored by Vance over the years. Though she has reservations about her husband's beliefs, she supports him regardless.[1]
↑ 1.01.1Fallout 3 Official Game Guide Game of the Year Edition p.76: "Holly At 26, Holly is the oldest female member of the group and was the first to join Vance when he decided to exile himself to Meresti. Over the years, she has grown fond of Vance, and they have enjoyed a healthy relationship. She is often found following Vance around wherever he goes, and they share the same bed. Since she is a veteran member of the Family, the rest of them accept her relationship with Vance and don't feel she is trying to get anything out of him or use him to get what she wants. She is strong-willed and intelligent, having been tutored by Vance over the years." (Fallout 3 Official Game Guide Game of the Year Edition Wasteland Census)