The kitchen was warm. The cream was cold. I had a fork (summer housing, limited utensils). Help!
Did you over whip it? Usually if it separates you are on your way to making butter. Try whipping in a bowl that is sitting in another bowl of ice to keep it cold. I once whipped cream while it sat in a bowl of ice and frosted the cake by sitting it in my freezer, it was so hot in my kitchen it turned instantly to soup. It worked because it kept the whipped cream cold while whipping and frosting the cake.
Thanks! I think the warmth made it go to butter more quickly. I made a second batch that came out slightly better.
You can try to incorporate a little more cream - add some to the side of the bowl and gradually whip it together. If it's well past over whipped/separated then this won't work.