Finn doesn’t need to go to the vet with Blue while she is being spayed. You actually are going to have to keep Blue separated from Finn for a few weeks after her surgery, so that she can heal, and while her hormones are leveling off. It could be dangerous for them to be together. I assume that Blue is young and that is why she was able to be with Finn up to now, but that wasn’t a true bond since only one of them had been altered. Blue will have to be kept quiet and somewhat restricted while she heals, then in a few weeks you can start their permanent bonding. They can be near each other, but should be kept physically apart until the time is ready for their bonding.

It’s definitely wise to separate. She may experience what we call a post spay craze which means her hormones will be alllll over the place. That coupled with feeling groggy can mean she becomes aggressive.

Since they had been together for a few months with no problems, they hopefully will bond permanently very quickly, but you do have to wait a few weeks. You don’t want to take a chance on Blue opening up her stitches if she happens to get into a scuffle with Finn. After her spay, she will be in a delicate state and a changing state, which is why they should be separated for a while.

I’m not always convinced by separating them. I have friends in other countries where they don’t have vets experienced in spaying females, who have unspayed female and neutered male bonds. It also used to be the norm in the UK and US.Obviously its best to spay and neuter, but in cases where that isn’t possible and rabbits live together for years, I think they can be bonded. I wouldn’t advocate bonded an unspayed female and a neutered male, but since you already have….

They do sound bonded, and I think as long as the female isn’t young, then they do have a true bond and separating them would be harmful. I think there was a similar case pretty recently where a forum leader also advocated keeping them together, although I doubt I can find the thread.