Hi Ella, I’m having a similar problem here too. My 2 lops, Taffy and Tato, seem to be in a love hate relationship.
I’ve had taffy for 3 years, and Tato for a month. Been try to bond these 2 girls for the past week. They are both around 2-3 years old and sterilized.
Before the adoption, we brought taffy over to tato’s place several times. No fighting occurred, just sniffing and head bumping each other. So I thought Tato was the right match and adopted her.
They are housed in adjoining play pens, and would fight thru bars. Nothing serious but sometimes I would find small tuffs of fur.
Taffy would be more aggressive to Tato when housed in her pen. Constantly standing up, trying to scratch and bite Tato thru the divider. Tato was initially a very submissive bunny.
3 days later, Tato seemed to pick up taffy’s habits and would try to bite taffy through the divider as well.
I do bonding sessions in the toilet. The worse fight was when taffy bit Tato, and Tato retaliated by biting taffy’s ears, so taffy has a small tear on her ear.
They fight lesser now, be it in bondings or thru bars. I seem to have better luck in bonding during the afternoon than the night.
They still fight during bathroom bonding but I always have my water spray on standby. Physically separating them by hand doesn’t work.
Now taffy grooms Tato but it seems like Tato hasn’t accepted taffy and still bears a grudge on how taffy treated her violently in the past as Tato would always demand for grooming from taffy, and if taffy stops, she would bite taffy and taffy would retaliate, resulting in a fight again.
Maybe your female buns are like mine too.