Great shot, like the depth of field and very good composition, by which I mean congratulations on getting her to sit still for the photo! Until recently I had a cavalier myself, a tricolour (black brown and white). Great dog, although despite sleeping all day he'd suddenly become very active whenever a camera was around, so most of my photos of him are of a dog-sized blur attempting to leave the frame.
P.s. keep her on the rope toys... it might just distract her from eating the rest of the house as mine did