> I think this is my fault really as when she wakes in the morning; I bring her upstairs after a wee and she goes back to sleep until I am ready to get up
Hmm that does sound like it was the cause - she's had a taste of the good life and decided to exploit your good nature!! Are there other dogs downstairs with her?
If she's not on her own down there, and if it were me I'd harden my heart and leave her downstairs. For a few weeks I'd just get up up earlier with her then try to lengthen the period of time so that she sleeps longer in the morning.
My dogs have slept upstairs in a crate whilst tiny puppies but as soon as I think I've learnt their routines/noises etc I put them back downstairs with regular trips into the garden based on their bladder capacity. They've never been allowed back upstairs. I did however go and sleep on the sofa with one of them as he wouldn't go back in his crate after 6am without really yelling and waking my daughter up which I thought was a bit unfair on her. This period lasted a month or so I think...
I should add that my youngest dog is a sleeper and just learnt to settle at night really quickly, he also started to lie in quite soon after going the full night - a big contrast to my middle dog (above). I do think that some of this is just hard wired in and to some extent it differs with each dog - like people - some do late nights and others do early mornings!!