I had a problem along as a result of sharing. My friend was earning half as much as me, and had a child with a genetic disorder which made child rearing extremely demanding. I felt pretty guilty about it.
Fortunately, she changed jobs from academia to industry, and probably now makes two to three times as much as me...
Then you shouldn't feel bad. She was leaving money on the table that she needed. Your conversation led her to make necessary changes. If you had kept quiet she might still be struggling.
Fortunately, she changed jobs from academia to industry, and probably now makes two to three times as much as me...