I'm sorry to hear. Maybe after the vet appt you will have more information on if she is indeed blind.
Maybe a month separation is needed and then you can try again see if it helps any. I'm so sorry it's difficult. He may only like having someone around OUTSIDE his space but not within his space. My bun, Tigger, wants love and attention from his brother Binks but only in the backyard where there is lots of space. In the house or in his cage - ABSOLUTELY NOT. He doesn't want any bun in HIS space.
Bugs may be the same...you never know.
It could also be the breed for Evie. My Mrs. Bon-bons is the same mini-rex, and she is nippy with Binks but Binks LOVES her. I thought she had eye issues and might see well but the vet said she was fine.
She will nip him at treat time, if another bun comes up to their cage she will nip at Binks (reminds me of how my mother rabbits where with the babies, when another rabbit would come up they would nip the babies to get them away from the cage - I wonder if it was to protect them).
During the bonding with them we were at the "date" for about 3 hours without issue. Came home placed them in my daughter's room, at the time, in cages next to each other. Over the next week they came out and spent the day together, 3+ hours. She did not groom him, he loved on her, they would lay together, she would stay near him mostly. The lady at the bunny date said that she thought it would be a good fit, but that Binks would get frustrated if she didn't return the grooming and it could cause him to lash out. It took her 5 days before she groomed him back. After that we did an overnight. My daughter and I took turns being up with them. We had one tussle, that was it. Then the next day they stayed in the cage all day together, no issues, the next night we put them together and they were alright so after that, they moved in together. Now, she will nip him occasionally, like I mentioned above, Binks will occasionally try to hump her (he is a special needs Bunny - long story short - he is missing bones in his hind quarters from Rat Bite Fever and basically has Arthritis and gets pain meds injected weekly) so he can chase her only so much before he gives up. But they ADORE each other even though there are the occasional spats, there has never been a fight, blood shed, etc. They work it out...
She was very hesitant with us, even for the first few months she would "lash out" and I thought it was because she had eye issues and was scared of us. I don't think that she was in a place where she had much attention, her nails were HORRIBLE, she had previously broken when I adopted her, and she did not want to be touched by us. Took a long time, a lot of loving talk, "You are safe with us", "We just want to love you and keep you safe", "We won't hurt you", "We love you, Binks loves you", "It's ok, we are nice people". etc. She loves us now, and no longer digs and bites at us, or lunges, but it took about 6 - 7 months before she would really allow us to hold her/pick her up and snuggle, feel safe. She will come when we call her when they get outside time, she will come to the cages and ask for love/treats/attention by standing on her hind legs.
I usually give a piece of papaya after the front feet and then after the bottom feet - so they get used to the fact they get a treat. I will also will split a banana chip in half and they will get half for front and half for back. It helps with most of them...but I have a few that still hate nails - but it has to be done. 
