Contrast this with what her mother was up to when she was a child. She might try to obfuscate and plead the question but her attempt to employ truthiness in order to vilify her mother is somewhat inadequate and doesn't hide the fact that the Ridgways were saving up in order to provide a better future for them all. We know that they succeeded because they knew what they were doing and had a long-term goal in mind. It might not have been fun at the time but those who can think about the issue can agree that the sacrifices and delayed gratification were well worth not having the latest and best shiny junk to boast about on the playground. Notice that this excludes a screaming, short-sighted id with a garage full of Farley golf club covers.
Lynn has no immediate plans to praise her mother for having the foresight to make a better tomorrow because she resented having to wait for the greater plan to succeed. We see this in the strip when people who have a clear goal in mind and work their asses off to achieve it despite that conflicting with the impulsive, thoughtless spending habits of the reckless and stupid are regarded as monsters who don't want to wait for the miracle to happen. This, of course, is because the idiot doesn't realize how lucky she is and that if other people hadn't opened doors for her, she'd be a frustrated also-ran who doesn't realize what she's doing to alienate Rod's patients.