Very good. Since she likes art/paintings, I could suggest Behind The Frame: The Finest Scenery. It has a great narrative and doesn't take too long (2h). Not sure if I would put it in the top3 but thats your decision anyway. Good luck. South of The Circle is another narrative game which left me pondering. I think thats the perfect genre for her anyway, whether she uses the word art or not ;)
PS: Please post the result of the competition :D