I am going to lean in on the fat option, but that is not to say she is not dumb, blind, or dumb and blind as well.
My rational is that she is looking to buy saga, which happens to so disgustingly large and ugly, as to fit even the fattest of individuals, and make the most disfigured look half decent. I believe she is doing so to achieve the effect exemplified in the movie hall pass, where a solid 7 serounds herself with 4's and 5's in order to make herself look like an 8 or 9. However in this case, I believe our fatty would be happy just to bump up to a 2. She is fat, and fat by definition is very ugly.