Never heard of any of these. Checked them out and they all look great. Hard to decide but I think I will include one of yours. Thanks a ton!
If she is a fan of detective stories, then you wish to look into L.A. Noire or Shadows of Doubt.
Ori and the Blind Forest
Jusant or Tiny Glade have a distinct look.
Edit: Not art but for two player games, try Lovers in a Dangerous Spacetime, Untitled Goose Game, or Trine.