Hi taylorr, oh my goodness, what an awful experience.
Is there any chance the blindness is temporary?
My Margaux, who passed away in Dec. 2014, went blind late in 2008 from a retinal hemorrhage caused by high blood pressure. It was gradual loss of vision in her case, but she adapted very well, and your kitty will adapt too.
If there aren't any other health concerns other than the blindness, I would definitely bring her into the main living area. Let her know where her litterbox, food, and water are.
The biggest way that you can help is to give her lots and lots of reassurance. Margaux had always been my dog-cat - always waiting for me at the door, always following me from room to room, but she had never been a lap cat and really didn't like petting, or most physical contact. After she went blind, she wanted to be close to me all the time.
Your kitty will rely on you to keep her safe. On a practical level, the most important thing you can do is to not move furniture around and to make sure there isn't anything that could hurt her if she walked into it. You said your apartment is loft-style, so I'm assuming there aren't any stairs to deal with?
She will probably spend quite a bit of time doing what looks like aimless wandering and walking along the walls several times. She's memorizing the layout. She might also yowl at first because she's disoriented. But the fact that you do only have one space will make it easier for her. She'll rely on her hearing and smell to help her. If I saw Margaux nosing around looking for her water bowl, I'd tap it so she knew where it was. I'm not going to lie, the little thump noises when she walked into something were heartbreaking. But she made it through two moves, the last one from 2 BR apartment to a 3 BR two story house. I was so afraid that it would be too much for her to deal with. Nothing to worry about. It took less than 2 months for her to be navigating pretty easily.
Sending lots of head scratches to your kitty!