Awww – thats so sweet that she was cuddling! I think that in general, most bunnies benefit from having a companion, since by nature, rabbits are more social animals and live in colonies, I think that they are verysuited to living with a friend. The benefits of a rabbit companion is that bunnies can provide companionship for each other than humans cannot, for example, they groom each other, play together as bunnies, and can snuggle all day. That being said, each bunny has a different personality, and what kind of bunny they get along with, or whether or not they want a friend really just depends on their personality.
If you want to get your bun a companion, I recommend that you take your bunny on several “dates” to meet other bunnies and see how she does. Bonding can be a long process, so don’t be discouraged if she doesn’t bond immediately to another bunny. Stuffed dogs are easier to bond to because they let the bunny be the dominant one!