Where Jackie is getting confused (I think) is that she isn't taking into account that transmitting a file over the Internet involves many servers getting copies. Those copies are not publicly accessible, but they exist. It is not possible to remove all copies everywhere by making a demand for removal.
When you say "you are perfectly within your right to do anything you want to an image without violating any copyright" we should perhaps clarify that this assumes you've acquired the image legally. That's part of the point I was making when I said that someone could (probably) scan a copy to their own computer.
It remains unsettled, at least in US law, whether there is an unlimited right to make multiple copies for personal, non-commercial use. That has been one of the issues, for example, at the heart of copyright infringement cases over music recordings and it's why music companies have preferred to specify the number and nature of the copies in the purchase (license) agreement.
There is also the related problem of uploading a copy for personal use to, say, your private account at a document storage service, then sharing the folder with one or more people.
It's also unsettled whether emailing a copy is automatically a form of distribution. If I email a copy of an image to myself, I've made a copy but if I have a right to make a copy for personal, non-commercial use then I haven't distributed the image.
Along the same lines, if I email a copy to my wife and she receives it at our computer in our home, have I made a personal copy or have I distributed it? And, if she divorces me and takes that computer, is she legally obligated to delete the copy that belongs to me or is it one of my personal copies that I lost in the divorce?
I imagine you can play these legal guessing games as well as any of the rest of us. The point is that it gets tricky when people start using broad legal principles to make absolute judgments about individual cases.