This is my fiance'! While this photo is unmodified, she does not have purple skin. The colors appear this way because of the use of color infrared film. Only the strawberry is reflecting in this infra red spectrum. I've been playing with this film and find it surprising - usually in a bad way, since I do not have a place that can develop it propperly (AR-5; I have it done E6) but sometimes the outcome is a surprises to be happy with!
This is very interesting Dan, I didn't even know there is such a film. I like your fianceé's expression, it makes the image pleasant to look at. The light reflecting in her eyes is very good.
I would suggest that you try this image with the strawberry either closer or farther away from her face. As it is now, the edge of the strawberry is just touching the edge of her cheek, which makes the photo lose depth. The white triangle between her shoulder and her hand distracts me somewhat.