In a limited way she is right. You don't "see" with your eyes, you see with the minds eye. Your eyes collect data, and your brain interprets it. Your brain and her brain might interpret things differently.
That being said: Through common experience, it is clear that most people see pretty much the same things when we look at something. We all judge distance pretty much the same way, and recognize faces the same way (although some of us are certainly better at this than others). So what she is saying is certainly possible, just not very likely.