First off, do you have a female rabbit? If so how old is she? Has she been spayed? How long ago was the surgery? Is it possible that you could get a male partner instead, as male/female partnerships tend to work well? Also if you get another female will she be spayed and had 2-3 months to recover? Is there any chance to have a pre-screening with the female you are looking to adopt, that way you could try to see if they are compatible?
If two females have been spayed it is possible they are able to bond, however there is a chance that if it doesn't work then they will have to live separately is that something you are open to?
Hope all goes well <3