Thank you both so much for your replies.
Penny, that is an excellent idea of using a squeaky toy to distract her from the smell, as my voice is not incentive enough for her to lift her head sometimes (yet?), often food isnt either. I shall certainly try that one, but it will have to be out of earshot of my mothers collie
I was probably trying to move too quickly for her also, and will go back to treating more frequently. She is a cheeky little madam, if she thinks i should have rewarded her already and i havent she switches off.
Dillydolly I am so sorry to hear about Dilly, I send flowers to you for him. I will practise the recall in the way you suggested, with the long line and try that with the treats when she is hungry. That sounds like a great little game with the toy. Storm is not clicker trained, but i am sure she will be able to pick it up, i'll try it with her as it sounds like fun.
Thanks again to you both for your responses and encouragement,
sportsmonki