Why do you think the two popular girls didn't get their faces fixed?

One thing I was wondering was why Bridget and Heather were shown to be still disfigured at the end - well technically Bridget but we can presume Heather was stilled scarred as well. I kept wondering that myself because these days with plastic surgery as advanced as it is there is virtually no kind of facial injury that is completely, totally unfixable. These days plastic surgeons can give people faces presentable to the public when they are actually missing whole eyes, noses and have had their entire faces complete distorted. Google facial reconstructive surgery and you can see what I mean. Are we mean to presume they never got it fixed, either because their families could not afford it, which i would personally doubt since their families probably were at least somewhat well off and that kind of surgery would be a huge priority, or that since Bridget was only shown the day after the incident that it was only temporary and she was soon after going to get her face at least somewhat fixed?