I would say "Twenty dollars a week doesn’t go far. Expenses had been greater than she had calculated. They always are."
Explanation:
In this answer, it explicitly says " Expenses had been greater than she had calculated. They always are." which infers that by saying "they always are", would imply she never makes enough money to be financially fit.
Explanation:George and Lydia Hadley say it will be like a "vacation" to turn off all their tech. ... I think they Hadley's call it a vacation because they can finally spend time with their kids and build relationships with them and the technology get in the way of that.