Aggression Introduction going wrong/Aggressive female

[Melichat]

Hello! I tried to introduce a piggie to my herd of 12 females, and the newest piggie was just aggressive and so scared of everyone and she attacked everyone (describing what I mean below), and it ended with a fight (actual ball fight) with one of the 12, and I had to separate her, and currently she is in a Midwest cage by herself.

I never had any issues introducing any of my 12 females together (who all live together in a 12 feet by 3 feet enclosure, 36 square feet) so I'm not sure what to do next

She was teeth chattering, hissing, biting everyone who came close, lunging at them and jumping on them, fur all puffed up, and actually attacking all of the others but all 12 are so sweet and not aggressive that they would just run away after being bitten and teeth chatter and whine, even my boss pig, and she would just make sure the others were okay after new piggie lunged at everyone else

It was in a neutral area, no hideys, only 2-3 hay piles and nothing else. also tried veggies and while eating she was fine and not attacking anyone and it seemed peaceful, but as soon as the veggies were eaten, she restarting being really aggressive


Should i try re-introducing when she is less terrified of everything? I feel like she was very overwhelmed by 12 other piggies just going to smell her and everything, OR should i try and adopt a very young baby guinea pig and hopefully she wouldn't be aggressive? because right now she just seems so sad, barely moving, she is eating well though, but SO terrified of everything
Any help is appreciated

Picture of her here

*sorry if my English is bad, not my first language*

 

[bpatters]

My only suggestion is to section off a portion of the cage and put her in it, or put the Midwest cage in the big cage, and leave her there for several days before trying introductions again. That will give everyone time to get accustomed to each other's scents.

And if you can figure out a way to do it, maybe try a buddy bath with all of them together before reintroducing them. If you do that, put a teeny tiny drop of vanilla on each nose and tail before the introductions. Maybe by the time the scent wears off they'll have made friends.