Hi lambsie - One way to get her photos into your new listing, assuming she has the photos saved on Auctiva, is to click the 'switch to externally hosted images' link at the bottom of the Image Selection section of the lister page. Then when you click 'select image' a pop-up window will appear with a box for entering an externally hosted URL. If you enter the URL of her photo, even though it is actually hosted by Auctiva, it should display in the listing. The URL can be found next of the thumbnail on her list of saved photos. Repeat the process for each photo.
An alternate method would be for her to email the photos to you so you can put them on your hard drive, and then upload them to Auctiva under your account. Then you can insert them into the listing in the normal way.