Allan,
I think you've done a good job with the backing - it's sensitive and doesn't overwhelm the song. I liked the gypsy almost-out-of-tune violin particularly. She's a good singer and I thought this was an excellent, very well written, catchy tune. My only constructive suggestion would be concerning the vocals. I thought they sounded a bit cold and distant and a bit lacking in body. Maybe more reverb, double track, put more bass in the EQ on her voice and/or push her vocals up in the mix. This is a personal song and I want to feel closer to her as she sings if that makes any sense.
I'd like to hear more from this collaboration.