Seems like most of the photos are mis-focused. Most probably due to the photographer not used to handling a heavier dSLR and prone to handshake syndrome.

Leaving EXIF data intact for the photos will help a lot in commenting.

From what I noticed from the pictures you posted, they are not taken at the correct timing. The model seems not to be in the mood or not ready yet.

For model's expression, #3 is the best of the lot. However, her face and hair are overexposed from the bright sunlight.

All the pictures are quite soft and the face of the model is mostly OOF.