Alison:

What is she crossed with by the way?

I would love to know. She looks very labish, but she has some white, with
a little black on her muzzle and tail. The black has darkened since this
picture. Her tail curls over her back.

http://img34.picoodle.com/img/img34/...ym_ac887a7.jpg

The vet believes she is lab/border collie and the markings do resemble a
border collie but I don't remember collie's tails curling over their
backs. Her hair is very short and bristly; and I haven't seen any herding
instinct at all. Her activity level is low-med, characterized by short
bursts of energy followed by long naps. Her behavior is very lab-like.