Answer:
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.
personally i think it is "rootless" as wanderers don't really have family roots in a town or any certain town that they live in because the are travellers.