A couple of questions, when you say "my computer" do you mean the computer that belongs to you or the section of the explorer called "my computer"?
Also, when you say the 8.1 programs and settings are in "my computer", could you elaborate on what those programs and settings are? Do you mean that you have the same programs installed on your pc as she does without installing them? Or that the settings from her pc have carried across?
To me it sounds like somehow it has synced across the network, but I'm not exactly sure what the question is so with a bit more information I can be a bit more specific.