Hi Carol Anne,
I wish i had a way for you to retrieve those images. In the older versions of PSP, the auto-save was simple, but now they have an auto-preserve that will save your work everytime you change image that you work on.
I don’t know how your PSP is set up, but do you have a folder where your images were that is called auto-preserve? If so, you might be able to retrieve them there.
Other than that, here is the help documentation you can refer to:
Hope it helps.