Hi Ash, where do I start?

Yes, apparently bunnies love the snow. And it is ok to let them out on cold days for a while, I let my gang out one day when it was dry and they love to run around in the mud etc, I did give them a good clean with a towel when they came back inside.

Yes it is much better for rabbits to have a friend, one of the opposite sex is best, although Jilly would have to be spayed first and the other rabbit should be spayed or neutered too. Sometimes it is hard to bond rabbits but if you decide later on to get another, I am sure some people here with give you advice on how to do that. There are also web sites that give good advice to.