The trivia item below may give away important plot points.
The St. Ursula painting has a dominant female figure whose eyes are clearly looking to her left and her mouth is slightly tightened. At the end of the film,sisters Roxy and Isabel get into a truck for their charity using the St. Ursula name and face as a large image on the back door of the truck. However the St. Ursula image on the truck is looking straight ahead and with a slight smile. So it's not taken from the painting that has caused such turmoil in the film.