You say she was bred back to her son, so I wonder - what was she like with the first litter? What is she like when she isn't preggo/nursing?
I've had plenty of does that became grumpy touch-me-nots when pregnant; that's understandable. I've had does that were so protective of their litters that I had to use subterfuges to get to the boxes so I could check on the litters, and I figure that's often part of the package of being a good mother. But they also have to get over it; I won't tolerate a doe that continues to go after me once the kits come out of the box. Of course, the animals I'm breeding may become pets, and I know that a certain amount of personality is inheritable. A friendly rabbit doesn't always produce more friendly rabbits, but a she-dragon is more likely to produce more just like her. I'd prefer not to be responsible for a child getting attacked by their pet, so there's only so much irritability I will put up with in my breeding stock. A doe this hostile would be seriously endangering her rights to a place in the gene pool, IMO.
If I had to deal with a rabbit like this, I would open the cage door and wait for her to come to me. When she moved to the front of the cage, I would keep my hands high, and wait until she either hunkered down or turned so that I could get a clear shot at her shoulders. I would quickly pin her and remove her from the cage, then do whatever I needed to do and get it all completed before I put her back. If possible, I would pet her and handle her gently before returning her; I don't want her thinking I am only going to rough her up and create even more hostility in her mind.
Good luck!