I'm so sorry to hear that. I don't have any experience with a completely blind dog, but did have a Shepherd with pannus which would worsen at times and impair his vision. I would assume an option is to keep her in a more confined area with pee pads down when you aren't able to bring her to potty consistently enough. No great tips, but more than anything just wanted to say I'm sorry and hope you guys find a routine that works for both of you