It's not uncommon for true hairless rats to have a lot of difficulty lactating and raising a litter. Since hairlessness is a lethal recessive trait in the wild, there are more problems in general with keeping hairless rats. This is one or many reasons why breeders tend not to work with them.
My hairless boys came from Georgia incidentally. I've had several health and temperament issues with them. All manageable, but noticeably more frequent than my furred rats.
As Talamos said, if this is her first litter and she's young, you may have more problems. It's sad, but expected. Especially with you supplementing the remaining kits they've got a much better chance now. They may always be a bit small, but between you and mama, they've got a good chance.
If you get survivors, you might want to consider neutering or spaying and keeping them as company for Babydoll, since you'll eventually want to get her a buddy anyway for her well being. I've got six boys and with the right space, it's not very problematic keeping several.