I’m very sorry for your loss. 🙁
I think if you are able to bring the body home, it won’t hurt, and could possibly help. It is good that she’s doing OK now, but I have noticed sometimes rabbits take a little time to show their grief (or get more confused over time by their missing partner). It’s also possible she knew he was very sick and already said her goodbyes.
Vets in general don’t usually know much about bonding. If it were me personally, I would place your deceased bun’s body in with her for a few hours and see how she reacts. She may lay near it, groom it, nip it, or ignore it completely. If she lays with it, wait till she leaves the body to remove it. If she notices its there but then ignores it for a few hours, you can safely remove it. I know it may seem morbid, but rabbits do not feel the same emotions we do, and it will help her understand what has happened. I’ve not heard of any cases where the bun was more upset by it.
Again I’m so sorry for your loss. <3
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The answers provided in this discussion are for general guideline purposes only. The information is not intended to diagnose or treat your pet. Seek the advice of your veterinarian or a qualified behaviorist.