I’d take a break, like a week before trying anything again.
It doesn’t really sound to me like you’re top rabbit in this house, I think Usagi is. It seems to me like you’re a little lost, kind of sitting back and lamenting about your poor girl. This week I think you should read up on difficult bonding. You’re doing things technically correct, in the same way I think that a lot of people would do them, but you really need a lot of confidence to control strong-willed creatures, and I don’t see a lot of confidence in the way you type/talk about them.
Your little girl is GOING TO LIVE. I know it’s really distressing to see her frightened and being hurt, but you’ve probably been scared in your life too and you didn’t die–and being down on yourself or your situation isn’t helping you feel better about it. So imho take some time off, comfort your girl, and give yourself a few pats on the back even though it isn’t going ideally. Then go forth with a lot of confidence, more confidence than just hope lol.
Here’s a good page that might help you : http://www.rabbit.org/journal/4-4/tough-bonding.html
Don’t be scared, and don’t second guess yourself.