What does she think you should be doing instead?
Stopped paying real attention years ago, but it's usually a story where she knows a person who makes however many dollars a year and I could have too. I don't think this discussion would have been any different if I was in one of those jobs.
That person usually works 60-80 hours a week. She leaves out the times when it isn't a great year in that area and they were laid off for 8 months. She misses the toll on your body working like that takes. She doesn't realize the cost of the trucks and the tools, if you need them.
I guess it is easier when you simplify down to $X a year for your best year.
If you were a plumber, she'd have an easy answer when talking to her friends about what doubled112 does. Plumber is a job everyone understands at a basic level; most of the trades are because you can point to a finished product. "He builds things like that."
Sometimes an analogy can help; I've definitely told people I'm an internet plumber and that seems to satisfy their curiosity.