It could possibly be the case that every dog is different?

So maybe try a few things, and when you find something that grabs her attention, something that makes her stop and think "oops too far" then just work with that?

Thanks Wysiwyg and Smokeybear, I'll take a look at those links.

This sounds familiar! I have tried 'yelping' but it seems to make her worse...she 'play growls' more (if that makes sense) and seems more determined to grab hold of any bit she can.

Yes, you're right, I've got to find what works best with Rosie So I am greatful for all ideas so I can find which suits us best

Don't forget that often the behaviour can become worse just before it gets better. If it's something that's always worked they'll try just that little bit harder when it suddenly stops working. Kinda like us flicking a light switch several times when it doesn't come on the first time. Most of the time people give up and say something isn't working when this happens.