Hyperbolic. Unless she has a second job she surely has other activities to occupy her 50-80 non working, non sleeping hours. She's making the much weaker statement that dropping from e.g. 40 hours of economically productive and legible work to zero would leave her worse off, and that's much more understandable.

Most of the people who get a lot out of retirement are still doing economically productive work, it's just illegible to the point they don't feel it's worth bothering to make a buck off it. Any serious hobby is basically a second job you don't get paid for, in other words.