what is wrong with my baby rabbit?

she was born in my last litter may 25th,i sold all 14 of her siblings but i kept her (because she looks like her late father that died of old age).she's 6 months and 13 days old and a californian mix,anyway i tried keeping her alone but she was super depressed so i put her in the big hutch with my 3 does and lionhead buck.we had a horrible hurricane in the bahamas and their hutch got destroyed(they we're inside)so i sold the rest and kept her and my lion head buck simba. they shared a cage for 2 months now and became good friends,my plan was too seperate them when she turns 7 months because i was told larger breeds mature at 8 months.yesterday she was sweet and calm as shes always been but today she was very mean running away from me and growling at me and the male rabbit and making this strange honking sound.there is no way she can be pregnant shes not the size of her mom yet and not nearly her dads size,what can be wrong i am really scared and feel like a failed as an owner.