I PMed you. As I said in my PM, I think she could be aggressive because she’s
a) exhausted after having had two litters in a row
b) pregnant again (buns can mate through cage bars, and buns can get pregnant again immediately after giving birth
c) experiencing some kind of pain/discomfort from some physical ailment.
c) is imo the least likely cause, because she’s devouring her food. Sick buns or buns in pain tend to go off their food. You see a decrease in appetite rather than an increase.
I have heard about girl buns becoming aggressive after having two or even three litters very closely together. Pregnancies take a toll both on the body and the psyche. She could need more protein and calcium than normal, because having babies “costs” protein and calcium. You could supplement her diet with for example alfalfa hay or more pellets. With a really greedy bun it’s recommended you scatter the pellets rather than serving them in a bowl. Greedy buns can accidentally choke on pellets, and the outcome can be tragic. You should also try and give her some more playtime. 30 minutes every other day isn’t enough for a bunny.
Most of us here at Binky Bunny don’t have a lot of experience with breeding, because it is, as you are aware, a prohibited topic on these forums. To come into contact with people with more experience with post-pregnancy does etc, I recommend you go to a forum called Rabbits Online, their section called The Rabbitry and Show Room: http://www.rabbitsonline.net/forums/the-rabbitry-and-show-room.20/