I have always let my bunnies say their goodbyes to the dead body. I have found that it really is important to them, and makes the grieving easier. I don’t find it morbid at all. I guess you could say it is morbid as well that when people die, they are not put into the ground immediately by the hospital, but actually people are invited to say goodbye to the dead body placed in a coffin at a ceremony. We all have different ways of saying goodbye.
I would not get a new bunny right now. I think it is important that Miley is not being stressed about a new bunny in the house. She should have full attention and love right now. But of course, that doesn’t mean you can’t look around for a new bunny so that you can go out and pick up Bolt’s new girlfriend soon after.
In regard to how quickly it should happen, I think there are many different opinions. I know a big rabbit rescue that bonds the remaining rabbit the day after, because they have found that the longer, the remaining rabbit is alone, the bigger the risk of it dying afterwards because it doesn’t eat. On the opposite, I have heard from people who had problems with the bonding straight after that found that the remaining rabbit wasn’t ready to meet a new partner soon after.
I would most likely wait a week, not longer.