To this day my neighbor still thinks I'm a professional golfer.
What initially made her think that you were a professional golfer?
I think it has to do with my trophies from high school.
You should not maintain a false impression about who you are. You will be embarrassed once the truth comes out.
But it doesn't really matter what she thinks I do.
I still don't think it's right for you to let her go on believing that you're a pro golfer. What if she embarrasses herself by telling someone else?