Please bear with me on this one, I don't know all the details, as I haven't seen this problem myself.
Apparently the person uses AOL as her ISP. She can navigate around happily, but if she tries to select a text box to type data in, such as ordering items online, she cannot do so. I don't think it is a mouse problem as she cannot even use the keyboard to tab to the input field.
As I've never heard of such a problem, I thought I would ask you guys/girls for any advice that I can pass on.
Is there an IE setting that could cause these symptoms?