@mygoldendoe - to a rabbit person, the scenario you are describing sounds most like a dominant doe (you were told it's the mother of the others, so it fits) that may very well be pregnant. Any rabbit can be territorial about its cage, but does seem more prone to it, and even a normally easygoing doe can get grumpy when pregnant. I don't blame you for not wanting to get bitten; I have a scar on my wrist from a rabbit bite that happened more than 15 years ago - those teeth are sharp, and some of 'em don't play around!
Rabbits have a 'pecking order,' and this rabbit thinks she outranks you. Rabbits can growl when threatening; I'm betting this animal was standing up with her head up and maybe ears laid back - that's rabbit body language for "If you don't get out of my space, you're gonna get it!" Height is dominance; crouching low is submission. If you are putting your hands low in the cage, or approaching her from a lower position, she thinks she's "higher" than you. If you have to put your hands in this dragon rabbit's cage, come in as high as you can, and don't move away if she comes at you. Put your hand on top of her (if you can do it without getting bitten!) and hold her down and away from you as you do what you need to in the cage. As I said, she may be pregnant, so she may have an excuse for being nasty, but I don't put up with rabbits that are just cranky by nature. A certain amount of personality is inheritable, and I find dealing with such animals too unpleasant to want to risk creating more of them.