kaya_semme's reply history at Help.com

Mail order is probably not the way to go. You don’t want to give your friend a dead rabbit, that would be gross. Look around your town and you’d be surprised how many rabbits are available. Petstores, pounds, breeders, accidents.

I think time would be the most important issue here. Some rabbits just aren’t that social. My rabbit and her sibling used to get along until they started rabbit “puberty” then they fought a lot. A lot of rabbits prefer to be with humans rather than their own kind. They love treats, parsley, carrots, bits of apples; that might make your bunny loosen up. ;D