I've finally got that feedback I've been desperate for :-)
The Reader does say some really nice things (and the words 'dim and muddled' did not appear!!!) that have really encouraged me and her comments about the problems with the story are gold dust. In fact so much of it is really useful that I'm going to do a couple more posts about the points she raises, both to consolidate them in my own mind and for anyone else who might be interested.
But before I think about the problems I'm going to enjoy the nice comments -
"I enjoyed reading your story a great deal. You have a fluid, easy to read writing style, a fantastic grasp of dialogue and a fabulous 'voice' which is fresh, sharply witty and very distinctive. Your voice is the one fundamental thing about your writing that can not be learned and is hard to change, so having one that is going to catch an editor or agent's eye (and I believe yours will) is worth its weight in gold. I loved your opening which I found hooky and instantly engaging. I also liked your heroine's sassiness and felt she had a strong internal conflict and while your hero was a bit more problematic I did enjoy his sense of humour, too"
After this did follow twelve pages of things that need work (gulp) but all extremely valid and very useful points that I can apply to my newer WIPs...
At the end my Reader says "I've put a lot of time and effort into this report because I think you as a writer have a great deal of potential and talent. Everything else, frankly, is just nuts and bolts"